MFN: 100 65: 19761100 1: SID/SCD 2: 9107 3: INPE-9107-PRE/4782 4: MET 5: S 6: as 10: Buchamann, J. 10: Moura, Antonio Divino 10: Hirata, M.H 12: The influence of extratropical meteorological phenomena in the climate of northeastern Brazil: A study with finite difernces 14: 143-156 30: Matematica Aplicada e Computacional 31: 2 32: 2 58: CPT 61: 64: <1983> 68: PRE MFN: 1755 1: SID/SCD 2: 994 3: INPE-994 4: CEA 5: S 6: as 7: 000 10: Kirchhoff, Volker Walter Joann Heinrich 10: Batista, Paulo Prado 12: Calculation of the vertical drift of the sodium ion 14: 509-514 30: Annales Geophysicae 31: 1 32: 6 42: 58: DGE 58: DAE 59: FISAT 61: 64: Nov-Dec. <1983> 68: PRE 76: AERONOMIA 88: ion drift 88: sodium ion 88: sodium layer. 83: A numerical application of the wind shear theory is made for the sodium ion aiming at a better understanding of the role of this ion in the sodium layer theory. The vertical ion drift velocity is calculated as induced by the summation of all semidiurnal and diurnal tidal wind modes, as well as the vertical drift component induced by the average ionospheric electric field. An ion layer convergence zone is formed between 2 and 16 hrs. The addition of the electric field inhibits a tendency for downward propagation of the convergence center between 2 and 8 hrs, but the downward motion is little affected between 10 and 16 hrs. Between 18 and 24 hrs the ions are swept out of the region since a divergence center is present between about 98 and 95 kin, also with a downward movement. The addition of the electric field induced vertical drift decreases the net vertical drift and increases the height of convergence by about I km The calculations are made for low latitudes 91: 8312 MFN: 2113 1: SID/SCD 2: 1940 3: INPE-1940-RPQ/ 4: CEA 5: MC 6: am 10: Gonzalez-Alarcon, Walter Dem‚trio 10: Gonzalez, Alicia Luisa Clua 12: SOLAR WIND ENERGY AND ELECTRIC FIELD TRANSFER TO THE EARTH'S MAGNETOSPHERE VIA MAGNETOPAUSE RECONNECTION 53: Chapaman Conference on Magnetic Reconnection 54: 3-7 Oct. <1983> 56: Los Alamos 58: DGE 59: 903302 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8103 MFN: 2114 1: SID/SCD 2: 1941 3: INPE-1941-RPQ 4: CEA 5: PM 6: m 16: Abdu, Mangalathyil Ali 16: Bittencourt, Jos‚ Augusto 16: Batista, Inez Staciarini 18: Longitudinal diferences in the spread-f characteristics in the American zone and implications on the F-region dynamo 58: DAE 59: IONO 64: <1983> 68: RPQ 76: AERONOMIA 91: 8308 114: Com traducao para o portugues com o mesmo numero MFN: 2127 1: SID/SCD 2: 1983 3: INPE-1983 4: CEA 5: S 6: as 7: [07] 10: Clemesha, Barclay Robert 10: Kirchhoff, Volker walter Johann Heinrich 10: Simonich, Dale Martin 12: Remote measurements of tropospheric and stratospheric winds by ground based lidar 14: 2907-2910 30: Applied Optics 31: 20 32: 17 40: En 41: En 42: 58: DGE 58: DAE 59: FISAT 61: 64: <1981> 68: PRE 76: AERONOMIA 83: Horizontally spaced lidar measurements of spatial irregularities in particulate scattering have been used to measure wind velocity in the 12-16 km height range. A steerable lidar at a fixed zenith angle was aimed at three different azimuths in sequence, enabling a determination to be made of the atmospheric scattering profile at three horizontally spaced positions. An analysis of the time variations of the backscattered lidar signal shows that they are mainly caused by the horizontal translation of spatial irregularities in atmospheric particulates and can therefore be used to determine the magnitude and direction of the horizontal wind. The derived wind vectors are in good agreement with radiosonde measurements 91: FDB-20000110 92: FDB-MLR MFN: 2177 1: SID/SCD 2: 2165 3: INPE-2165-RPQ 4: CEA 5: S 6: as 10: Kirchhoff, Volker Walter Johann Heinrich 10: Clemesha, Barclay Robert 10: Simonich, Dale Martin 12: THE ATMOSPHERIC NEUTRAL SODIUM LAYER .2. DIURNAL-VARIATIONS 14: 442-450 31: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 32: 88 38: 1 58: DGE 58: DAE 59: FISAT 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8108 MFN: 2182 1: SID/SCD 2: 2174 3: INPE-2174-RPI/O64 4: MET 5: S 6: as 7: [07]551521.14 10: Yelisetty, Viswanadham 10: Andre, Romisio Geraldo B 12: Energy balance of sybeans grown in Brazil 14: 141-157 30: Archive for Meteorology Geophysical, and Bioclimatology 31: 33 32: 1-2 40: En 41: En 42: 58: DCT 59: RECAT 61: 62: INPE 64: <1983> 66: Sao Jose dos Campos 67: BR 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921230 92: FDB-MLR 101: D MFN: 2201 1: SID/SCD 2: 2236 3: INPE-2236 4: CEA 5: S 6: as 10: Sahai, Yogeshwar 10: Bittencourt, Jose Augusto 10: Teixeira, Nelson Rodrigues 12: Observations of large scale F-region irregularities using airglow emission at 7774A and 6300A 14: 271-276 30: Annales Geophysicae 31: 1 32: 3 40: En 41: En 42: 58: DAE 58: DGE 59: FISAT 61: 64: May-June <1983> 68: PRE 76: AERONOMIA 88: F-region 88: nightglow 88: ionospheric irregularities. 83: Simultaneous scanning measurements of the atomic oxygen 7774 A and 6300 A emissions, to study the dynamics of low-latitude large scale F-region irregularities, were carried out at Cachoeira Paulista (geographic coordinates 22.70 S, 45.0( W; geomagnetic latitude 11.950 S), Brazil, during the period October-November, 1980. The measurements were made with a two-channel photometer which permitted scanning observations both along and across the magnetic meridian. Observations at 7774 A can detect large scale irregularities near the F-region peak height, whereas observations at 6300 A detect such irregularities at an altitude about 50 km to 100 km lower, depending on the F-region height. On many nights, during spread-F conditions, as indicated by an ionosonde operating at the same location, the presence of large intensity depletions of short duration were detected in both emissions. These depletions were observed to move towards the cast in the east-west scans, and apparently towards the south in the north-south scans. Salient features of these observations are presented and discussed 91: 8302 MFN: 2208 1: SID/SCD 2: 2247 3: INPE-2247 4: CEA 5: S 6: as 7: 79-87 10: Zamlutti, Carlos Jose 12: AN OVERVIEW ON INCOHERENT SCATTER OBSERVATIONS OF MID-LATITUDES SPORADIC E AND FURTHER COMMENTS FOR IMPROVED DATA ANALYSIS 14: 000 30: Journal of Atmospheric Terrestrial Pahysics 31: 45 32: 2-3 58: DAE 59: IONO 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8303 MFN: 2237 30: Monthly Weather Review 31: 111 32: 1 40: En 41: En 42: 58: DME 59: METBA/SINO 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8301 101: D 1: SID/SCD 2: 2342 3: INPE-2342-PRE/086 4: MET 5: S 6: as 7: [07]551.509.324:528.711.7(81) 10: Fortune, Michael 10: Kousky, Vernon Edgar 12: Two sever freezes in Brazil: precursos and synoptic evolution 14: 181-196 MFN: 2241 30: Monthly Wather Review 31: 111 32: 1 40: En 41: En 42: 58: DME 59: META/SINO 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8301 101: D 1: SID/SCD 2: 2349 3: INPE-2349-PRE/090 4: MET 5: S 6: as 7: [07]551.511.61 10: Kousky, Vernon Edgard 10: S. Srivatsangam 12: The seasonal cycle over the United State and Mexico 14: 165-171 MFN: 2242 1: SOD/SCD 2: 2353 3: INPE-2353-PRE/092 4: MET 5: S 6: as 7: [07] 10: Prakki, Satyamurty 12: Generation of subsynoptic-scale unstable baroclinic waves by surface friction 14: 2075-2079 30: Journal of Atmospheric Science 31: 40 32: 8 40: En 41: En 42: 58: CPT 59: META/MASC 61: 64: Aug. <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8308 101: D MFN: 2244 58: DCT 59: MET.BASICA 61: 64: Mar. <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8306 101: D 1: SID/SCD 2: 2358 3: INPE-2358-PRE/094 4: MET 5: S 6: as 7: [07] 10: Marques, Valdo da Silva 10: Vadlamudi, Brahmananda Rao 10: Molion, Luiz Carlos Baldicero 12: Interannual and seasonal variation in the energetic of the atmosphere over Northeast Brazil 14: 136-148 30: Tellus 31: 35A 32: 2 40: En 41: EN 42: MFN: 2246 1: SID/SCD 2: 2365 3: INPE-2365 4: CEA 5: S 6: as 10: Kirchhoff, Volker Walter Johann Heinrich 10: Hilsenrath, E 10: Motta, Adalton Gouveia 10: SahaiI,Yogeshwar 10: Medrano-Balboa, Rene Adalid 12: Equatorial ozone characacteristics as measured at Natal (5.9 degrees S, 35.2 degrees W) 14: 6812-6818 30: Journal of Geophysical Research 31: 88 32: C11 42: 58: DGE 59: QUIAT 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 83: Ozone density profiles obtained through ECC sonde measurements taken during the first three years of a joint INPE/NASA long term program of measurements at Natal have been analysed. Time variations, as expected, are small. Outstanding features of the data are tropospheric densities substantially higher than those measured at other stations, and also a total ozone content that is higher than the averages given by satellite measurements 91: 8308 MFN: 2257 1: SID/SCD 2: 2415 3: INPE-2415-PRE/ 4: CEA 5: S 6: as 10: Kirchhoff, Volker Walter Johann Heinrich 10: Clemesha, Barclay Robert 12: THE ATMOSPHERIC NEUTRAL SODIUM LAYER. 2. DIURNAL VARIATIONS. 32P. 14: 442-450 30: Journal Geophysical Research 31: 88 32: A1 40: En 41: En 42: 58: DGE 58: DAE 59: FISAT 61: 64: <1983> 68: PRE 76: AERONOMIA 83: Using recently proposed chemistry which includes the NaOH molecule, static calculations simulating the nocturna sodium layer have been shown to give results in good agreement with an average of sodium measurements. In order to further evaluate this Na layer model, a dynamic time dependent atmospheric photochemistry vertical diffusion model has been developed to calculate the diurnal variation of sodium and compare it with recent measurements. The diurnal calculations show that the Na model fails to reproduce the measured diurnal behavior of the Na layer, which, for example, shows little variation in abundance, between day and night. The situation is further aggravated if we include the reaction NaO2+O NaO+O2. After a thorough review of the reaction rates, it is shown that the major modification which needs to be-introduced with respect to the previous model is the elimination of the reaction NaOH+H- Na+H20. The production of the NaOH molecule is thus effectivelly transformed into a height dependent sink for Na. The sensitivity of the model is tested for variations of the reaction rates and the eddy diffusion coefficient and the results are shown to be in much better agreement with experiment 91: 8301 MFN: 2258 1: SID/SCD 2: 2416 3: INPE-2416 4: CEA 5: S 6: as 7: 9197-9204 10: Abdu, Mangalathayil Ali 10: Mediros, Rui Tertuliano 10: Sobral, Jos‚ Humberto Andrade 10: Bittencourt, Jos‚ Augusto 12: Spread F plasma bubble vertical rise velocities determined from spaced ionosonde observations 14: 000 30: Journal of Geophysical Research 31: 88 32: A11 40: En 41: En 42: 58: DAE 59: IONO 61: 64: Nov. <1983> 68: PRE 76: AERONOMIA 87: ionosonda 87: sondas ionosf‚ricas 87: bolhas de plasma 87: propaga‡Æo F 87: densidade dp plasma 88: ionosonds 88: plasma bubbles 88: spread F 88: plasma density 83: Systematic time differences in the onsets of spread F events in the ionograms are observed between the magnetic equatorial station Fortaleza (4 degree S, 38 degree W, dip latitude 1.8 degree S)and the low-latitude station Cachoeira Paulista (23 degree S, 45 degree W, dip latitude 14 degree S), two stations in Brazil, located at close-by magnetic meridional planes (actually some 12 degree of magnetic longitude apart). On the assumption, justified from different experimental observations, that the spread F irregularities occur in strongly field-aligned plasma bubbles that extend several degrees on either side of the magnetic equator, and rise up in vertically elongated columns over the magnetic equator, we have related the observed time differences in the onsets of spread F events at the two stations to the plasma bubble vertical rise velocities over the magnetic equator. The vertical rise velocities of the plasma bubble so determined are found to be well within the values measured by VHF radar and satellite techniques, and further show, at times, good correlations with the amplitude of the prereversal peak in the vertical drift velocities and the heights of the evening equatorial F layer. Possible implications of these results are discussed 91: 8311 MFN: 2264 1: SID/SCD 2: 2439 3: INPE-2439-PRE 4: CEA 5: S 6: as 10: Kondapalli, Ramanuja Rao 10: ESPIRITO SANTO,C.M. 12: UM TELESCOPIO PARA FOTOMETRIA ULTRAVIOLETA, P.20 14: 1663-1670 30: Ciˆncia e Cultura 31: 35 32: 11 58: DAS 59: ASTRO 61: 64: <1983> 68: PRE 91: 8311 MFN: 2269 1: SID/SCD 2: 2461 3: INPE-2461-PRE/153 4: MET 5: S 6: as 7: [07]551.587(812/814) 10: Marques, Valdo da Silva 10: Vadlamudi, Brahmananda Rao 10: Molion, Luiz Carlos Baldicero 12: Variabilidade do fluxo de vapor d'agua na regiao Nordeste do Brasil 14: 1133-1139 30: Ciencia e Cultura 31: 35 32: 8 40: Pt 41: Pt 42: 58: DCT 59: APLIMI 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921211 101: D MFN: 2270 1: SID/SCD 2: 2469 3: INPE-2469- 4: CEA 5: S 6: as 10: Medeiros, Rui Tertuliano 10: Abdu, Mangalatyil Ali 10: Kantor, Ivan Jelinek 12: A comparative study of VHF scintillation and spread F events over Natal and Fortaleza in Brazil 14: 6253-6258 30: Journal of Geophysical Research 31: 88 32: A8 40: En 41: En 42: 58: DAE 59: IONO 61: 64: Aug. <1983> 68: PRE 76: AERONOMIA 87: propaga‡Æo 87: cintila‡Æo 87: atmosfera equatorial 87: pblha de plasma 87: disturbios ionosf‚ricos 88: spread F 88: scintillation 88: equatorial atmosphere 88: plasma bubble 88: ionospheric disturbances 83: A comparative study is carried out of the equatorial ionospheric irregularity occurrences, as observed by range spread F events over Fortaleza (4 degree S, 38 degree W, dip latitude 1.8 degree)and satellite VHF signal scintillation event over Natal (5.8 degree S, 33.23 degree W, dip latitude 4.8 degree S)for a one-year period 1978. Close association is observed in the occurrences and the durations of the irregularities at the two stations. Marked differences in the seasonal behavior of the occurrences of the irregularity events over these two stations are noted with respect to that over Huancayo, most important of them being that while the latter station presents equinoctial maxima in the occurrence rates (as over some African stations), the Brazilian stations show an additional and pronounced peak in December. This result is explained as possible evidence of magnetic declination control of the spread F irregularity generation and its seasonal dependence. The present results have important implications also on the coexistence of different irregularity scale sizes during equatorial plasma bubble irregularity events 91: 8308 MFN: 2273 1: SID/SCD 2: 2483 3: INPE-2483 4: CEA 5: S 6: as 10: Jardim, Maria Virginia Alves 10: Martin, Inacio Malmonge 10: Jardim, Jeronimo Osvaldo Dias 12: MEDIDA DA EMISSAO CONTINUA EM RAIOS GAMA DE BAIXA ENERGIA NA DIRECAO DO CENTRO GALATICO. 12P. 14: 1159-1162 30: Ciˆncia e Cultura 31: 35 32: 8 58: DAS 59: 901105 61: 62: 64: <1983> 68: PRE 76: ASTROFÖSICA 91: 8308 MFN: 2278 1: SID/SCD 2: 2491 3: INPE-2491-PRE 4: CEA 5: S 6: as 10: Zamlutti, Carlos Jose 12: ON INCOHERENT SCATTER OBSERVATIONS OF MID-LATITUDE SPORADIC E AND COMMENTS ON ITS DATA ANALYSIS 14: 79-87 30: Journal Atmospheric and Solar Terrestrial Physics 31: 45 32: 2-3 58: DAE 59: IONO 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8303 MFN: 2279 1: SID/SCD 2: 2492 3: INPE-2492-PRE/ 4: CEA 5: S 6: as 7: [07] 10: Kirchhoff, Volker Walter Johann Heinrich 10: Clemesha, Barclay Robert 12: The dissipation of a sodium cloud 14: 369-372 30: Planetary Space Science 31: 31 32: 4 40: En 41: En 42: 58: DAE 58: DGE 61: 64: <1983> 68: PRE 90: b 76: AERONOMIA 83: Occasional observations of strong increases in the atmospheric sodium densities and/or Na nightglow intensities suggest that the cause is the deposition of a sodium cloud in addition to the local equilibrium sodium layer. This situation is simulated to investigate the response of the atmospheric sodium layer to variations of the source influx rate. The settlement of the sodium to the equilibrium layer after the deposition of a sodium cloud is shown to be a long lived event in which the excess sodium is transported downwards, to the sink, by eddy diffusion. The possibility of a modulated source influx rate is also investigated showing a tendency for a strong attenuation of this modulation below the source 91: FDB-19960314 92: FDB-MLR MFN: 2280 1: SID/SCD 2: 2493 3: INPE-2493-PRE/ 4: CEA 5: S 6: as 10: Simonich, Dale Martin 10: Clemesha, Barclay Robert 12: Resonant extinction of lidar returns from the alkali metal layers in the upper atmosphere 14: 1387-1389 30: Applied Optics 31: 22 32: 9 40: En 41: En 42: 58: DAE 59: 112003 61: 64: <1983> 68: PRE 76: AERONOMIA 83: Resonant extinction is shown to have a small but significant effect on lidar returns from upper atmospheric sodium. An equation to correct for it is developed, and the magnitude of the correction for broadband and monochromatic lasers is discussed 91: 8305 MFN: 2284 1: SID/SCD 2: 2502 3: INPE-2502-PRE/ 4: CEA 5: S 6: as 10: Kirchhoff, Volker Walter Johann Heinrich 10: Clemesha, Barclay Robert 12: EDDY DIFFUSION COEFFICIENTS IN THE LOWER THERMOSPHERE. 14: 5765-5768 30: Journal Geophysical Research 31: 88 32: A7 58: DGE 58: DAE 59: FISAT 61: 64: July <1983> 68: PRE 76: AERONOMIA 83: The seasonal variation of the eddy diffusion coefficient is deduced for a height of 94 km at 23§S on the basis of two independent methods of analysis. One of these methods, already used in the past, is related to indirect measurements of atomic oxygen, and the other one is a new method related to measurements of the density of upper atmospheric sodium. The results are mutually consistent, giving a maximum eddy diffusion coefficient during summer 91: 8307 MFN: 2288 1: SID/SCD 2: 2513 3: INPE-2513 4: CEA 5: S 6: as 10: Costa, Jos‚ Marques da 10: Jardim, Jeronimo Osvaldo Dias 10: Martin, Inacio Malmonge 10: BOCLET,D. 10: DUROUCHOUX,PH. 10: OLIVIER,E. 10: Senador, Renato 10: MALUTA,A. 10: Villela Neto, Thyrso 12: TELESCOPIO GE(LI)PARA LINHAS DE RAIOS GAMA NA ATMOSFERA DO HEMISFERIO SUL 14: 900-911 30: Revista Brasileira de Fisica 31: 12 32: 4P2 40: Pt 41: Pt 42: 58: DGE 59: ASTRO 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8312 MFN: 2293 1: SID/SCD 2: 2530 3: INPE-2530-PRE/197 4: MET 5: S 6: as 7: [07]528.711.7:551.510.42 10: Yelisetty, Viswanadham 10: Torsani, Jose Aparecido 12: A note on vertical eddy diffusion coeficient from the Landsat imagery 14: 1495-98 30: Boundary Layer Meteorology 31: 26 32: 1 40: En 41: En 42: 58: DCT 59: RECAT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8303 101: D MFN: 2308 1: SID/SCD 2: 2561 3: INPE-2561 4: CEA 5: S 6: as 7: 000 10: Jayanthi, Udaya Bhaskaram 10: Martin, Inacio Malmonge 10: Kondapalli, Ramanuja Rao 10: Jardim, Jeronimo Osvaldo Dias 12: COSMIC DIFFUSE GAMA RAYS BALLOOM OBSERVATIONS AT EQUATORIAL LATITUDE 14: 1893 30: Ciˆncia e Cultura 31: 35 32: 12 58: DAS 59: 901105 61: 64: <1983> 68: PRE 76: ASTROFÖSICA 91: 8312 MFN: 2334 1: SID/SCD 2: 2602 3: INPE-2602-PRE 4: CEA 5: S 6: as 10: Bittencourt, Jose Augusto 10: Teixeira, Nelson Rodrigues 10: Sahai, Yogeshwar 10: Takahashi, Hisao 12: MAPPING OF IONOSPHERIC F-REGION PARAMETERS FROM ATOMIC OXYGEN AIRGLOW EMISSIONS 14: 697-705 30: Journal of Atmospheric and Terrestrial Physics 31: 45 32: 10 40: En 41: En 42: 58: DAE 58: DGE 59: IONO 61: 64: <1983> 68: PRE 76: AERONOMIA 83: Simultaneous North-South scanning observations of the OI 7774  and 6300  nightglow emissions have been carried out at Cachoeira Paulista (geographic coordinates 22.7§S, 45.0§W; geomagnetic latitude 12.0§S), Brazil, to study the tropical F-region dynamics under spread-F and no spread-F conditions. From the observed emission intensities the ionospheric F-region peak electron densities and peak heights can be determined with a good coverage both in latitude and local time. The results are presented in the form of computer generated gray level shade maps showing the variations of the column intensities of the 7774  emission (J7774 ) and of the 6300  emission (J6300), as well as the variations of (J7774)1/2 (related to F-region peak electron density)and of the ratio (J7774)1/2/ J6300 (related to F-region peak height), as a function of zenith distance (latitude)and local time. Significant features of these observations are discussed. This technique is useful to study dynamical processes and large scale plasma irregularities in the night-time tropical ionosphere 91: 8310 MFN: 2337 1: SID/SCD 2: 2610 3: INPE-2610 4: CEA 5: mp 6: m 16: Paula, Eurico Rodrigues de 16: Abdu, Mangalahyil Ali 16: Kantor, Ivan Jelinek 18: EFEITOS DAS TEMPESTADES MAGNETICAS NA REGIAO F DA IONOSFERA EQUATORIAL NO BRASIL. 20: 000 58: DAE 59: IONO 64: <1983> 68: RPQ 91: 8301 MFN: 2340 1: SID/SCD 2: 2615 3: INPE-2615 4: CEA 5: MP 6: m 7: 000 16: Kane, Rajaram Purushottam 16: Trivedi, Nalin Babulal 18: COMPARISON OF STORM-TIMES CHANGES OF GEOMAGNETIC FIELD AT GROUND AND AT MAGSAT ALTITUDES (FINAL REPORT) 20: 000 58: DGE 59: GEOMA 64: <1983> 68: RPQ 76: GEOFISICA ESPACIAL 91: 8301 MFN: 2341 1: SID/SCD 2: 2618 3: INPE-2618 4: CEA 5: MP 6: m 16: Padilha, Antonio Lopes 18: DENSIDADE E SUSCEPTIBILIDADE MAGNETICA DE ROCHAS PRE-CAMBRIANAS DO SE DO BRASIL 20: 000 58: DGE 59: GEONUC 61: NE 64: <1983> 68: RPQ 76: GEOFISICA ESPACIAL 91: 8301 MFN: 2342 1: SID/SCD 2: 2623 3: INPE-2623-PRE/ 4: CEA 5: S 6: as 10: Clemesha, Barclay Robert 10: Simonich, Dale Martin 12: LIDAR OBSERVATIONS OF THE EL CHICHON DUST CLOUD AT 23 DEGREES SOUTH 14: 321-324 30: Geophysics Research Letters 31: 10 32: 4 40: En 41: En 42: 58: DAE 59: FISAT 61: 64: <1983> 68: PRE 76: AERONOMIA 83: . Lidar observations of the stratospheric aerosol scattering at SÆo Jos‚ dos Campos (23§S, 46§W)show a very large increase in the stratospheric aerosol burden to have occurred in mid-1982. Peak scattering ratios greater than 5 have been observed, as compared with pre-enhancement values between 1.1 and 1.2, representing an increase by more than an order of magnitude in particulate scattering. It is concluded that the main source of the 91: 8304 MFN: 2345 1: SID/SCD 2: 2643 3: INPE-2643- 4: CEA 5: PM 6: m 16: Villela Neto, Thyrso 16: Braga, JoÆo 18: CONSIDERACOES SOBRE A VARIABILIDADE EM RADIO E RAIOS-X DO QUASAR 3C273 E DA GALAXIA CENTAURUS A. 34P. 40: Pt 41: Pt 42: 58: DAS 59: ATRO 64: <1983> 68: NTC 76: ASTROFÖSICA 91: 8302 MFN: 2347 1: SID/SCD 2: 2648 3: INPE-2648 4: CEA 5: MP 6: m 7: 000 16: Zamlutti, Carlos Jose 18: TID'S COMPRISED WITHIN A GLOBAL UPPER ATMOSPHERE DYNAMICS SYSTEM 20: 000 58: DAE 59: IONO 61: NE 64: <1983> 68: RPQ 91: 8302 MFN: 2348 1: SID/SCD 2: 2659 3: INPE-2659 4: CEA 5: MC 6: am 10: Kantor,Ivan Jelinek 12: TRABALHOS EM CIENCIA ESPACIAL NO INSTITUTO DE PESQUISAS ESPACIAIS (INPE)QUE ENVOLVEM MATEMATICA APLICADA. 53: ENCONTRO REGIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 1 54: 23-25 FEV. <1983> 56: SÆo Jos‚ dos Campos 58: DAE 59: 903108 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8302 MFN: 2349 1: SID/SCD 2: 2660 3: INPE-2660 4: CEA 5: MC 6: am 10: Abdu, Mangalahyil Ali. 10: Sobral, Jose Humberto Andrade 10: Kantor, Ivan Jelinek 10: RAMIREZ,R. 10: ALVES,P.R.G. 12: IONOSPHERIC EFFECTS OBSERVED DURING THE BIME CAMPAIGN OVER FERNANDO DE NORONHA AND FORTALEZA. 42: 53: BIME MEETING 54: 3-10 Mar. <1983> 56: Boston 58: DAE 59: IONO 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8303 MFN: 2351 1: SID/SCD 2: 2665 3: INPE-2665 4: CEA 5: S 6: as 7: 000 10: Pereira, Enio Bueno 10: Nordemann, Daniel Jean Roger 12: THE EFFECTS OF A TROPICAL RAIN FOREST COVER ON AIRBORNE GAMMA-RAY SPECTROMETRY 14: 99-108 30: Revista Brasileira de Geof¡sica 31: 1 32: 2 53: International Symposium on Applied Geophysics in Tropical Regions 54: Set. <1982> 56: Belem 57: BR 58: DGE 59: GEONUC 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8303 MFN: 2353 1: SID/SCD 2: 2674 3: INPE-2674-RPE/428 4: MET 5: MP 6: m 7: [07]551.513 16: Bonatti, Jose Paulo 16: Silva Dias, Pedro Leite 18: Um modelo espectral barotropico global com iniciacao por modos normais 20: 120 40: Pt 41: Pt 41: En 42: 58: CPT 59: MET. basica 62: INPE 64: mar. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: ESTUDO DO CLIMA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2355 1: SID/SCD 2: 2683 3: INPE-2683 4: CEA 5: S 6: as 10: Kirchhoff, Volker Walter Johann Heinrich 12: ATMOSPHERIC SODIUM CHEMISTRY AND DIURNAL VARIATIONS: AN UP-DATE 14: 721-724 30: Gophysics Research Letters 31: 10 32: 8 58: DGE 59: FISAT 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 83: Recent results for sodium reaction rates have led to a reassessment of the importance of atmospheric sodium constituents and their distribution with height. The largest changes occur at the bottom of the neutral atmospheric sodium layer. A much larger reaction rate coefficient for the three body production of NaO2 makes this constituent potentially much more dense below about 80 km, whereas the inclusion of photolysis produces a large diurnal variation in the NaOH loss frequency. Because many of the Na reaction rates are still uncertain static calculations for four different options on reaction rates have recently been offered in the literature. We show that only one of these choices is able to produce diurnal variations that are in agreement with recent measurements 91: 8308 MFN: 2357 1: SID/SCD 2: 2686 3: INPE-2686-RPE/077 4: MET 5: MP 6: m 7: [07]551.509.324.336.645(81) 16: Instituto de Pesquisas Espaciais. Departamento de Meteorologia 18: Proposta de financiamento para o Projeto "Prevencao de Fenomenos Meteorologicos Catastroficos visando a defesa Civil-Geada" 20: 49 40: Pt 41: Pt 41: En 42: 58: DME 62: INPE 64: mar. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 87: GEADA 87: TEMPERATURA 82: 82: 91: FDB-19921215 92: FDB-MD 101: D MFN: 2358 1: SID/SCD 2: 2689 3: INPE-2689-PRE/288 4: MET 5: S 6: as 7: [07]551.551.2 10: Molion, Luiz Carlos Baldicero 10: Moore, C.J 12: Estimating the zero-plane displacement for tall vegetation using a mass conservation method 14: 115-125 30: Boundary Layer Meteorology 31: 26 32: 2 40: En 41: En 42: 58: DME 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: 8308 101: D MFN: 2360 1: SID/SCD 2: 2692 3: INPE-2692 4: CEA 5: MP 6: m 16: KALVALA,R.R. 16: ESPIRITO SANTO,C.M. 18: DIAMETERS OF A TYPE STARS BASED ON ULTRAVIOLET OBSERVATIONS 58: DAS 59: ASTRO 61: NE 64: <1983> 68: RPQ 91: 8304 MFN: 2361 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D 1: SID/SCD 2: 2697 3: INPE-2697-RPE/429 4: MET 5: MP 6: m 7: [07]551.513 16: Bonatti, Jose Paulo 16: Silva Dias, Pedro Leite 16: Moura, Antonio Divino 18: Funcoes de Hough: teoria e utilizacao 20: 271 40: Pt 41: Pt 41: En 42: 58: CPT 59: Met. Basica 62: INPE 64: abr. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b MFN: 2362 1: SID/SCD 2: 2698 3: INPE-2698 4: CEA 5: MC 6: am 10: Kirchhoff, Volker Walter Johann Heinrich 12: MODELAGEM DO OZONIO DA ATMOSFERA TERRESTRE 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 jul. <1983> 58: DGE 59: FISAT 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8307 MFN: 2363 1: SID/SCD 2: 2700 3: INPE-2700-NTE/022 4: MET 5: MP 6: m 7: [07]551.513 16: Lemes, Marco Antonio Maringolo 16: Yamazaki, Yoshihiro 18: O balanco de momentum angular na atmosfera 20: 35 40: Pt 41: Pt 41: En 42: 58: CPT 59: METBA 62: INPE 64: abr. <1983> 66: Sao Jose dos Campos 67: BR 68: NTC 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2364 1: SID/SCD 2: 2702 3: INPE-2702-RTR/028 4: MET 5: MP 6: m 7: [07]621.376.2 16: Rodrigues, Jose Antonio 16: Oliveira, Jose Luiz de 16: Trindade, Alexandre Nunes da 16: Inoue, Joao Koiti 16: Kono, Janio 16: Arakaki, Yumiko 16: Mosna, Rodinei Massetti 18: Demodulador FM do receptor wefax II 20: 65 40: Pt 41: Pt 41: En 42: 58: DME 59: ETIMET 62: INPE 64: abr. <1983> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2365 1: SID/SCD 2: 2703 3: INPE-2703-RPE/430 4: MET 5: MP 6: m 7: [07]551.515 16: Bonatti, Jose Paulo 16: Silva Dias, Pedro Leite 18: Estabilidade numerica de um modelo barotropico divergente discreto de area limitada 20: 70 40: Pt 41: Pt 41: En 42: 58: CPT 59: METBA/MASC 62: INPE 64: abr. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: ESTUDO DO CLIMA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2366 1: SID/SCD 2: 2705 3: INPE-2705 4: CEA 5: PM 6: m 16: Dutra, Severino Luiz GuimarÆes 16: Trivedi, Nalin Babulal 16: Nordemann, Daniel Jean Roger 16: Mendes, Ricardo Azevedo 16: Mandonado, Jos‚ Carlos 16: Bianchi Neto, J. 18: O SISTEMA MT INPE 58: DGE 59: GEOMA 62: INPE 64: <1983> 68: NTC 76: GEOFISICA ESPACIAL MFN: 2367 1: SID/SCD 2: 2706 3: INPE-2706-RTR/029 4: MET 5: MP 6: m 7: [07]551.508.824 16: Inoue, Joao Koiti 18: Estacao receptora wefax - descricao geral 20: 32 40: Pt 41: Pt 41: En 42: 58: DME 59: ETIMET 62: INPE 64: abr. <1983> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2369 30: Agricultural Meteorology 31: 30 32: 3 40: En 41: En 42: 58: DCM 59: RECAT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 87: RADIACAO 87: SOJA 87: ENERGIA SOLAR 82: 91: 8310 101: D 1: SID/SCD 2: 2709 3: INPE-2709-PRE/297 4: MET 5: S 6: as 7: [07]551.521.14:633.34(81) 10: Andre, Romisio Geraldo Bouhid 10: Yelisetty, Viswanadham 12: Radiation balance of soybeans grown in Brazil 14: 157-173 MFN: 2370 1: SID/SCD 2: 2725 3: INPE-2725-PRE/309 4: MET 5: MC 6: am 7: [07]621.391:621.376.5 10: Camilli, Paolo P. G 12: Dissemination of digital satellite imagery trough telephone lines 40: En 41: En 42: 53: Image Technology Annual Conference, 36 54: <1983> 58: DME 59: UAI-R 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2371 1: SID/SCD 2: 2727 3: INPE-2727-TDL/133 4: MET 5: T 6: m 7: [07]551.513(213) 16: Nobre, Afonso Nobre 18: Tropical heat sources and their associated large-scale atmospheric circulation 20: 299 40: Pt 41: Pt 41: En 42: 50: MIT 51: Doutor 58: CPT 59: METBA 64: <1983> 66: Cambridge 67: USA 68: TAE 90: b 76: METEOROLOGIA 91: FDB-19921214 92: FDB-MD 101: D MFN: 2372 91: FDB-19921216 92: FDB-MLR 101: D 1: SID/SCD 2: 2728 3: INPE-2728-PRE/310 4: MET 5: MC 6: am 7: [07]551.577.3(812/814) 10: Kousky, Vernon Edgar 10: Cavalcanti, Iracema Fonseca Albuquerque 10: Gan, Manoel A. 12: Contrasts between wet and dry periods within the 1981 rainy season in Northeast Brazil 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology, 1 54: 31 July-06 Aug. <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 59: METBA1 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: The rainy season in northern Northeast Brazil, which normally occurs between February and May, was in 1981 charaterized by extremes. Very little rainfall was recorded until 15 March. During 15-30 March excessive rainfall occured over nearly the entire region. April experienced a return to abnormally dry conditions. By compositing tropospheric wind fields for the contrasting periods we attempt to determine the salient features associated with these extremes. Streamline, divergence and vertical motion fields are produced for the composite fields and on daily basis. Preliminary results indicate that the Southern Hemisphere midlatitude circulation pattern was the primary factor in initiating the convective activity MFN: 2373 91: FDB-19921216 92: FDB-MLR 101: D 1: SID/SCD 2: 2729 3: INPE-2729-PRE/311 4: MET 5: MC 6: am 7: [07]551.515.2:551.510.52(261.5) 10: Kousky, Vernon Edgar 10: Gan, Manoel Alonso 10: Virji, Hassan 12: Low latitude upper tropospheric cyclonic vortices in the South Atlantic: their origin, characteristics and effects on tropical convection over Eastern Brazil 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology, 1 54: 31 July-06 Aug. <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: The occurrence of upper tropospheric cyclonic vortices in the low latitude region of the South America and eastern Brazil is related to characteristics of the upstream flow. These vortices form primarily during the southern summer months when the upper tropospheric flow over South America is strongly anticyclonic. Individual systems form or intensify generally 12-24 hours after the amplification of an upstream ridge. Although the displacement of these vortices is generally erratic there is a tendency for the low latitude ( 10-15S)systems to move westward. These greatly affect the distribution and intensify of convection over eastern Brazil MFN: 2374 91: FDB-19921216 92: FDB-MLR 101: D 1: SID/SCD 2: 2730 3: INPE-2730-PRE/312 4: MET 5: MC 6: am 7: [07]551.509.324(81) 10: Fortune, Michael A 10: Kousky, Vernon Edgar 12: Synoptic precursors of three severe Brazilian freezes in the Pacific Ocean and South America 40: En 41: En 42: 53: International Conference on Southern Hemisphere Meteorology, 1 54: 31 July-06 Aug. <1983> 56: Sao Jose dos Campos 57: SP 58: DME 59: GEAD6 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: The important precursors of three Brazilian freezes that affected world coffee markets were found to be: (a)A slowly moving long wave pattern in the central south Pacific Ocean amplified abnormally four to five days before the freezes; (b)the long wave ridge was located in the southern Andes, while the troughs were located near 120 W and 50 W in the Pacific and Atlantic Oceans respectively. Two factors contributed to unusual amplification of cold trougs in Brazil: the oportune superposition of short and long wave trougs, and propagation of wave energy from the mid-Pacific at group velocity MFN: 2375 91: FDB-19921216 92: FDB-MLR 101: D 40: En 41: En 53: International Conference Southern Hemisphere Meteorology, 1 54: 31 July-07 Aug. <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 59: MASC 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: The spatial distribution of monthly precipitation deviations from the normal over tropical South America and Western Africa was investigated using the available data up to the seventies. The spatial scales associated with these deviations were determined for dry and wet years in Northeast Brazil. It was found that, on the average, the NE Brazil drought spatial scale is not confined to that region but extends from South America to Africa, and perhaps more to East, in accordance with GCM simulations by Moura and Shukla (1981). The results also show an inverse relationship between NE Brazil and Guyanas rainfall, in agreement with Hastenrath and Heller (1977). It was found that years of drought in NE Brazil are also extremely dry over the south equatorial region of Africa, west of 20 graus E. In addition, sea level wind divergence March time series in the Atlantic, from 1948 up to 1972, correlated with precipitation in NE Brazil (Fortaleza and Quixeramobim)shows a negative area of correlation in South Atlantic and a positive area in tropical North Atlantic. This seems to be associated with interannual variations in intensity and position of the ITCZ and anomalous SST patterns as shown by Moura and Shukla (1981)and further evidenced by Oliveira (1982)using satellite imagery. The conclusion is that the spatial scale of atmospheric and oceanic phenomena associated with droughts in NE Brazil is not regional, but seems to extend from South America to Africa 1: SID/SCD 2: 2734 3: INPE-2734-PRE/314 4: MET 5: MC 6: am 7: [07]551.577.3(8:6-15) 10: Moura, Antonio Divino 10: Kagano, Mary T 12: Teleconnections between South America and Western Africa as revealed by monthly precipitation analyses MFN: 2379 1: SID/SCD 2: 2772 3: INPE-2772-RPE/435 4: MET 5: MP 6: m 7: [07]551.507.362.2 16: Conforte, Jorge Conrado 16: Arai, Nelson 16: Almeida, Fausto Carlos de 18: Navegacao das imagens de satelites meteorologicos geoestacionarios 20: 48 40: Pt 41: Pt 41: En 42: 58: DME 59: PROSAT 62: INPE 64: jun. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2380 1: SID/SCD 2: 2775 3: INPE-2775-RTR/031 4: MET 5: MP 6: m 7: [07]551.507.362.2 16: Rodrigues, Marcos Antonio 18: Sincronizador de formato SMS 20: 62 40: Pt 41: Pt 41: En 42: 58: DME 59: INSAP 62: INPE 64: jun. <1983> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2382 1: SID/SCD 2: 2794 3: INPE-2794 4: ETES 5: MC 6: am 10: Tude, Eduardo Antonio Parada 12: PROJETO DE AMPLIFICADORES DE BAIXO RUIDO EM BANDA L 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35., 54: 6-13 jul. <1983> 56: Belem 58: DEA 59: 915009 61: 64: <1983> 68: PRE MFN: 2383 1: SID/SCD 2: 2807 3: INPE-2807-RA/173 4: MET 5: MP 6: m 7: [07]528.711.7:551.465.63 16: Stevenson, Merritt R. 16: Inostroza Villagra, Hector Manuel 16: Steffen, Carlos Alberto 18: Angra-02 mission 6-7 and 22 October 1981 - data report 20: 105 40: En 41: En 42: 58: DCT 59: Angra 62: INPE 64: July <1983> 66: Sao Jose dos Campos 67: BR 68: RA 90: b 76: METEOROLOGIA 91: FDB-19930216 92: FDB-MD 101: D MFN: 2384 1: SID/SCD 2: 2808 3: INPE-2808 4: CEA 5: MP 6: m 16: JANARDHANAN,K.V. 18: A COHERENT VHF BACKSCATTER RADAR FOR INPE 58: DAE 59: IONO 64: <1983> 68: NTC 91: 8307 MFN: 2385 91: FDB-19921217 92: FDB-MD 101: D 1: SID/SCD 2: 2809 3: INPE-2809-PRE/367 4: MET 5: MC 6: am 7: [07]621.391:551.507.362.2 10: Mura, Jose Claudio 10: Garrido, Juan Carlos Pinto 12: Transmissao digital e visualizacao de imagens de satelites meteorologicos 40: Pt 41: Pt 41: En 42: 52: SBPC 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia, 35 54: 6-13 jul. <1983> 56: Belem 57: PA 58: DPI 59: UAI 61: 68: PRE 90: b 76: METEOROLOGIA 83: A Unidade de Analise de Imagens (UAI)e um equipamento destinado a facilitar a extracao de informacoes contidas nas imagens do satelite meteorologico da serie GOES, recebidas a cada meia hora no Instituto de Pesquisas Espaciais (INPE). Essas imagens, alem de serem visualizadas em monitores de TV, podem tambem ser realcadas e animadas. Para que os usuarios externos do INPE tenham acesso a essas imagens em tempo real, foi desenvolvido um sistema de transmissao por via telefonica que permite a sua obtencao em uma Unidade Remota (UAI-R). As imagens sao armazenadas em um banco de memorias tipo RAM, de 1 "Mega byte", com capacidade para quatro imagens. O sistema de transmissao e recepcao e controlado por um microprocessador 8085. O trabalho cita algumas aplicacoes do equipamento nas areas de Meteorologia, Hidrologia e Oceanografia MFN: 2386 1: SID 2: 2810 3: INPE-2810 4: CEA 5: MC 6: am 7: 000 10: Paula, Eurico Rodrigues de 10: Abdu, Mangalahyil Ali 10: Kantor, Ivan Jelinek 12: COMPORTAMENTO DO CONTEUDO ELETRONICO TOTAL DA IONOSFERA EM SAO JOSE DOS CAMPOS DURANTE TEMPESTADES MAGNETICAS EM 1980 14: 000 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 jul. <1983> 56: Bel‚m 57: BR 58: DAE 59: IONO 61: 64: <1983> 68: PRE 91: 8307 MFN: 2388 1: SID/SCD 2: 2829 3: INPE-2829-PRE/381 4: MET 5: MC 6: am 7: [07]551.584.4 10: Sa, Leonardo Deane Abreu de 10: Molion, Luiz Carlos Baldicero 12: Um estudo da camada limite superficial sobre superficie extremamente rugosa 40: Pt 41: Pt 41: En 42: 52: SBPC 53: Reuniao Anual da Sociedade Brasileira para o Progresso da Ciencia, 35 54: 6-5 jul. <1983> 56: Belem 57: PA 58: DCT 59: APLIME 61: 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D MFN: 2390 1: SID/SCD 2: 2833 3: INPE-2833 4: CEA 5: MP 6: m 16: JANARDHANAN,K.V. 18: A METEOR RADAR FACILITY FOR INPE 58: DAE 59: FISAT 64: <1983> 68: NTC 91: 8308 MFN: 2391 1: SID/SCD 2: 2838 3: INPE-2828 4: CEA 5: MC 6: am 7: 000 10: Dutra, Severino Luiz GuimarÆes 10: Gonzalez-Alarcon, Walter Dem‚trio 10: Gonzalez, Alicia Luisa Clua 10: Pinto, Iara regina Cardoso de Almeida 10: Pinto Jr., Osmar 12: MAPEAMENTO VERTICAL DE CAMPOS ELETRICOS IONOSFERICOS QUASE-ESTATICOS DE GRANDE ESCALA EM BAIXAS LATITUDES 53: ReuniÆo Anual da Sociedade Brasileira para o progresso da Cˆncia, 35 54: 6-13 jul. <1983> 56: Belem 58: DGE 59: GEOMA 61: 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8307 MFN: 2392 1: SID/SCD 2: 2839 3: INPE-2839-PRE/386 4: MET 5: MC 6: am 7: [07]551.511 10: Lemes, Marco Antonio Maringolo 12: Aplicacoes da mecanica de fluidos a meteorologia 40: Pt 41: Pt 42: 53: Congresso Nacional de Matematica Aplicada e Computacional, 6 54: 26-30 set. <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 59: PNTE/PMBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MLR 101: D MFN: 2393 1: SID/SCD 2: 2848 3: INPE-2848 4: CEA 5: PM 6: m 7: 000 16: Gonzalez, Alicia Luisa Clua 16: Gonzalez-Alarcon, Walter Dem‚trio 16: Jardim, Maria Virginia Alves 18: TRANSFERENCIA DE ENERGIA DO VENTO SOLAR A MAGNETOSFERA TERRESTRE DEVIDO A JUNCAO MAGNETICA NA MAGNETOPAUSA 20: 000 58: DGE 59: MAGNET 61: NC 64: <1983> 68: RPQ 76: GEOFÖSICA ESPACIAL 91: 8307 MFN: 2394 1: SID/SCD 2: 2854 3: INPE-2854-PRE/394 4: MET 5: MC 6: am 7: [07]621.398:629.783 10: Oliveira, Jose Roberto de 12: Telemetria por satelite 40: Pt 41: Pt 42: 53: Simposio Brasileiro de Hidrologia e Recursos Hidricos, 5 54: 13-18 nov. <1983> 56: Blumenau 57: SC 58: DME 59: INSAT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2396 1: SID/SCD 2: 2864 3: INPE-2864 4: CEA 5: S 6: as 10: Aguiar, Odylio Denys de 10: Nordemann, Daniel Jean Roger 12: EFICIENCIA DA MADEIRA COMO BLINDAGEM PASSIVA PARA PARTICULAS E FOTONS DE 0,5-4,6MEV ENTRE 940-377MB 14: 177-133 30: Revista de F¡sica Aplicada e Instrumenta‡Æo 31: 1 32: 2 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia, 35 54: 6-13 jul. <1983> 56: Bel‚m 57: BR 58: DGE 59: GEONUC 61: 64: <1983> 68: PRE 75: GEOFISICA ESPACIAL 91: 8608 MFN: 2398 1: SID/SCD 2: 2871 3: INPE-2871 4: CEA 5: MP 6: M 7: 000 16: Correa, Ricardo Varela 16: GONZALEZ-B.,F. 18: INTERFACE MULTICANAL B-6800 58: DAS 59: ASTRO 64: <1983> 68: NTC 76: ASTROFÖSICA 91: 8309 MFN: 2400 1: SID/SCD 2: 2879 3: INPE-2879-PRE/404 4: MET 5: MC 6: am 7: [07]551.508.826:556 10: Molion,Luiz Carlos Baldicero 12: O uso de satelites meteorologicos em hidrologia 40: Pt 41: Pt 42: 53: Simposio Brasileiro de Hidrologia e Recursos Hidricos, 5 54: 13-18 nov. <1983> 56: Blumenau 57: SC 58: DME 59: APLIME 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2401 1: SID/SCD 2: 2883 3: INPE-2883-PRE/406 4: MET 5: MC 6: am 7: [07]551.465.63:639.2.053.1(81-12) 10: Maluf, Sydnea 10: Matsuura, Yasunobu 10: Stech, Jose Luiz 12: First attempt to identify areas favorable for the surface occurrence of skipjack (Katsuwonus pelamis)off the Southeastern Coast of Brazil 20: 28 40: En 41: En 42: 53: Regular Meeting of the Commission - ICCAT, 8 54: Nov. <1983> 56: Madrid 57: ES 58: DSR 59: OCEMAT/CAPRE 61: 64: <1983> 68: PRE 90: b 76: OCEANOGRAFIA 87: PESCA 87: BONITO-LISTRADO 87: TEMPERATURA DA SUPERFICIE DO MAR 82: 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2403 1: SID 2: 2885 3: INPE-2885 4: CEA 5: S 6: as 10: Buivan, N. A. 10: Jardim, Jeronimo Osvaldo Dias 10: Braga, JoÆo 10: Jardim, Maria Virginia Alves 10: Martin, Inacio Malmonge 10: VEDRENNE,G. 12: CALIBRACAO DE UM TELESCOPIO PARA ESPECTROSCOPIA GAMA COM UMA NOVA CONFIGURACAO DE DIODOS GE(LI) 14: 552 30: Revista Brasileira de Fisica 31: 13 32: 7 40: Pt 41: Pt 42: 58: DGE 59: ASTRO 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8307 MFN: 2404 1: SID/SCD 2: 2887 3: INPE-2887-RTR 4: MET 5: MP 6: m 7: [07] 16: Lemes,M.A.M. 16: Yamazaki,Y.Franchito,S.H. 16: Santos,R.P. 16: Pereira, Claudio Solano 18: Um esquema operacional de previsao numerica de tempo 42: 58: CPTEC 59: 912611 62: INPE 64: set. <1983> 66: Sao Jose dos Campos 67: BR 68: RTR 90: b 91: 8309 MFN: 2407 1: SID/SCD 2: 2892 3: INPE-2892-PRE/ 4: CEA 5: MC 6: am 10: Clemesha, Barclay Robert 12: LIDAR STUDIES OF THE ALKALI METALS 53: IUGG General Assembly, 13 54: Aug. <1983> 56: Hamburg 57: Germany 58: DAE 59: FISAT 61: 64: <1983> 68: PRE 76: AERONOMIA 91: 8310 MFN: 2408 1: SID/SCD 2: 2897 3: INPE-2897 4: CEA 5: S 6: as 10: Padilha, Antonio Lopes 12: INTERPRETACAO DE ANOMALIAS AEROMAGNETICAS DA REGIAO DO QUADRILATERO FERRIFERO 14: 31-38 30: Revista Brasileira de Geof¡sica 31: 2 32: : 58: DGE 59: GEOMA 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8312 MFN: 2409 1: SID/SCD 2: 2899 3: INPE-2899 4: CEA 5: MP 6: m 7: 000 16: Kane, Rajaram Purushottam 18: PERIODICITIES IN THE RAINFALL PATTERNS OF DIFFERENT REGIONS IN INDIA 20: 22 58: DGE 59: GEOMA 64: <1983> 68: RPQ 91: 8310 MFN: 2410 1: SID/SCD 2: 2900 3: INPE-2900- 4: CEA 5: T 6: m 7: 000 16: Aguiar, Odylio Denys de 18: EFICIENCIA DA MADEIRA COMO BLINDAGEM PASSIVA PARA PARTICULAS E FOTONS DE 0,5 A 4,5MEV ENTRE 940 E 377MB 20: 000 42: 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DAS 59: AST 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: TDI 91: 8310 MFN: 2413 1: SID/SCD 2: 2904 3: INPE-2904-RPE/444 4: MET 5: MP 6: m 7: [07]551.511.61:551.465.46 16: Lemes, Marco Antonio Maringolo 16: Yamazaki, Yoshihiro 16: Pereira, Claudio Solano 18: Um modelo numerico para estudos de algumas circulacoes oceanicas costeiras 20: 25 40: Pt 41: Pt 41: En 42: 58: CPT 59: SIRES 62: INPE 64: out. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: ESTUDO DO CLIMA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2414 1: SID/SCD 2: 2907 3: INPE-2907 4: CEA 5: MP 6: m 16: Jayanthi, Udaya Bhaskaram 16: Martin, Inacio Malmonge 16: Braga, JoÆo 16: Neri, Jose Angelo da Costa Ferreira 16: JARDIM,M.V.A. 16: Kondapalli, Ramanuja Rao 18: OBSERVATIONS OF GALACTIC CENTER FOR ANNIHILATION LINE AT 0.511MEV 58: DAS 59: ASTRO 64: <1983> 68: RPQ 76: ASTROFÖSICA MFN: 2417 1: SID/SCD 2: 2912 3: INPE-2912-PRE/425 4: MET 5: S 6: as 7: [07]551.557.38(812/814) 10: Buchmann, J. 10: Moura, Antonio Divino 10: Hirata, M.H. 12: Influencia de fenomenos meteorologicos extratropicais no clima do Nordeste Brasileiro: um estudo via diferencas finitas 14: 143-156 30: Matematica Aplicada e Computacional 31: 2 32: 2 40: Pt 41: Pt 42: 58: CPT 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921214 92: FDB-MLR 101: D MFN: 2419 1: SID/SCD 2: 2936 3: INPE-2936-RPE/445 4: MET 5: MP 6: m 7: [07]551.511.61:551.465.46 16: Pereira, Claudio Solano 16: Lemes, Marco Antonio Maringolo 18: Um modelo numerico unidimensional para o estudo da ressurgencia 20: 46 40: Pt 41: Pt 41: En 42: 58: CPT 59: SIRES 62: INPE 64: <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: METEOROLOGIA 91: FDB-19921215 92: FDB-MD 101: D MFN: 2420 1: SID/SCD 2: 2942 3: INPE-2942 4: CEA 5: T 6: m 16: Batista, Paulo Prado 18: MARES SOLARES NA CAMADA MESOSFERICA DE SODIO 20: 000 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DAE 59: GES 64: <1983> 68: TDI 76: AERONOMIA 91: 8310 MFN: 2421 1: SID/SCD 2: 2946 3: INPE-2946-PRE/430 4: MET 5: MC 6: am 7: [07]551.551.2:634.0 10: Moore, C.J 10: Bruin, H.A.R. de 10: Molion, Luiz Carlos Baldicero 12: On the estimation of Zero-plane displacement for tall vegetation 20: 21 40: En 41: En 42: 53: International Conference on Forest Environmental Measurements 54: 23-28 Oct. <1983> 56: OAK Ridge 57: USA 58: DME 59: APLIME 61: 64: <1983> 68: PRE 90: b 76: VEGETACAO 87: FLORESTAS 87: MODELOS MATEMATICO 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2422 1: SID/SCD 2: 2948 3: INPE-2948-PRE/431 4: MET 5: MC 6: am 7: [07]551.508.826: 10: Moura, Antonio Divino 12: DCP systems and characteristics 40: En 41: En 42: 53: UN/FAO Training Course on Applications of Satellite Remote Sensing to Water Resources 54: 19 Sept.-07 Oct. <1983> 56: Rome 57: IT 58: CPT 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2423 1: SID/SCD 2: 2949 3: INPE-2949-PRE/432 4: MET 5: MC 6: am 7: [07]551.508.826:551.577 10: Moura, Antonio Divino 12: Assessments by satellite of meteorological data for water resources 40: En 41: En 42: 53: UN/FAO Training Courses on Applications of Satellite Remote Sensing to Water Resources, 8 54: 19 Sept.-07 Oct. <1983> 56: Rome 57: IT 58: DME 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2426 1: SID/SCD 2: 2972 3: INPE-2972-RPE/449 4: MET 5: MP 6: m 7: [07]551.465.63:639.2.053.1(81-12) 16: Maluf, Sydnea 16: Matsuura, Yasunobu 16: Stech, Jose Luiz 18: Primeira tentativa de identificacao de areas favoraveis a ocorrencia de Bonito-Listrado (Katsuwonus Pelamis), atraves de dados oceanograficos na regiao Sudeste-Sul do Brasil 20: 84 40: Pt 41: Pt 41: En 42: 58: DSR 59: OCEMAR 62: INPE 64: nov. <1983> 66: Sao Jose dos Campos 67: BR 68: RPQ 90: b 76: OCEANOGRAFIA 87: BONITO-LISTRADO 87: PESCA 82: 91: FDB-19921215 92: FDB-MD 101: D MFN: 2430 1: SID/SCD 2: 2978 3: INPE-2978-PRE/440 4: MET 5: MC 6: am 7: [07]621.376.5:535.33-1 10: Camilli, Paolo Pio G 12: Analisis quantitativa de imagenes infrarojo de satelite, utilizando un equipo de memorizacion digital 40: Es 41: Es 53: Seminario sobre Aplicacoes dos Sensores Remotos em Hidrometeorologia 54: 12-18 jun. <1983> 56: Bogota 57: Colombia 58: DME 59: UAI 61: 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921217 92: FDB-MD 101: D MFN: 2432 1: SID/SCD 2: 2986 3: INPE-2986 4: CEA 5: PM 6: M 16: Santos, Elisete Rinke dos 16: GONZALEZ-B.,F. 18: OSCILADOR CONTROLADO POR TENSAO 58: DAS 59: ASTRO 64: <1983> 68: NTC 76: ASTROFÖSICA 91: 8312 MFN: 2434 1: SID/SCD 2: 2997 3: INPE-2997-PRE/449 4: MET 5: MC 6: am 7: [07]556.1:551.58(811.3) 10: Molion, Luiz Carlos Baldicero 12: The water balance and climate 40: En 41: En 42: 53: Climate Conference for Latin America and the Caribbean 54: 28 Nov.-03 Dec. <1983> 56: Paipa 57: CO 58: DME 59: APLIME 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2435 1: SID/SCD 2: 2998 3: INPE-2998-PRE/450 4: MET 5: MC 6: am 7: [07]551.58:55.465.5(213) 10: Moura, Antonio Divino 12: The ocean and the dynamicas of the tropical atmosphere; its possible predictability 40: En 41: En 42: 53: Climate Conference for Latin America and the Caribbean 54: 28 Nov.-03 Dec. <1983> 56: Paipa 57: CO 58: CPT 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2436 1: SID/SCD 2: 2999 3: INPE-2999-PRE/451 4: MET 5: MC 6: am 7: [07]551.58(811.3) 10: Nobre, Carlos Afonso 12: The Amazon and climate 14: 409-416 18: Proceedings 40: En 41: En 42: 53: WMO Technical Conference on Climate Conference for Latin America and the Caribbean 54: 28 Nov.-03 Dec. <1983> 56: Paipa 57: Co 58: CPT 59: METBA 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: In this paper we review the climatologies of cloudiness and precipitation for the Amazon, explaining the physical causes of some of the observed features and pointing out those which are not well know. The atmospheric circulation over the Amazon is discussed within the framework of the large-scale tropical circulations (Hadley-Walker circulations)forced by deep diabatic heating sources. The question of weather deforestation leads to a reduction in evapotranspiration into the atmosphere, also a reduction in precipitation and its implications for the global climate is discussed. There are some indications that for large-scale clearing of tropical rainforests there would indeed be a reduction in rainfall and that would have global effects in terms of climate and weather both in the tropical and extratropical regions 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2450 91: FDB-19921216 92: FDB-MLR 101: D 1: SID/SCD 2: 3029 3: INPE-3029-PRE/466 4: MET 5: MC 6: am 7: [07]681.3.016:551.5 10: Almeida, Fausto Carlos de 10: Torsani, Jose Aparecido 10: Nakaya, Paulo Seiji 10: Capretz, Luiz Fernando 12: Sistema de gerenciamento de dados agrometeorologicos 40: Pt 41: Pt 42: 53: Congresso Brasileiro de Agrometeorologia, 3 54: 17-22 jul. <1983> 56: Campinas 57: SP 58: DME 59: BDMET 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: Este trabalho apresenta um Sistema de Gerenciamento de Dados Agrometeorologicos, e foi objetivado tendo em vista o grande volume de dados existentes no Departamento de Meteorologia do INPE, os quais diferenciam quanto a origem, tipo e forma de armazenamento e visa dar ao pesquisador meio mais eficaz para realizar consultas e/ou recuperar esses dados. Os dados podem ser caracterizados quanto a sua disponibilidade em tempo como: dados correntes (tempo real), dados recentes (periodo de tempo especificado - de 5 a 30 dias)e dados climatologicos (com controle de qualidade e armazenados para uso geral). Este sistema esta direcionado para atender as necessidades do usuario que utiliza dados climatologicos, e para isso possui duas bases de dados, sendo uma referente a base de dados agrometeorologicos (BDAM)e a outra referente a base de dados estatisticos (BDE), que e um resumo do conteudo da BDAM. A base de dados agrometeorologicos (BDAM)foi estabelecida dentro do conceito de grupo, que identifica cada sub-acervo da BDAM quanto as caracteristicas de disponibilidade em tempo, origem, tipo e processamento. O software deste sistema foi desenvolvido para este proposito por pesquisadores do INPE e, do ponto de vista da modelagem, consiste da interface usuario, cuja finalidade e permitir a "comunicacao" em linguagem "user friendly" entre o usuario e o sistema, e a interface dados, que permite manter e adicionar dados ao acervo. Existe tambem um sistema de gerenciamento logico e outro de gerenciamento fisico das bases de dados, permitindo ao administrador uma visao global do sistema. Neste trabalho, serao apresentados os conceitos e solucoes adotadas, assim como exemplos de consulta e recuperacao do sistema hoje implantado no INPE MFN: 2454 1: SID/SCD 2: 3070 3: INPE-3070 4: CEA 5: MC 6: am 10: Padilha, Antonio Lopes 12: INTERPRETACAO QUANTITATIVA DA ANOMALIA AEROMAGNETICA DO SINCLINAL GANDERELA 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 ju. <1983> 56: Belem 58: DGE 59: GEOMA 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8307 MFN: 2463 1: SID/SCD 2: 3121 3: INPE-3121-PRE/514 4: MET 5: MC 6: am 7: [07]551.588.6:633 10: Almeida, Fausto Carlos de 12: The management of atmospheric resources in food production 20: 6 40: En 41: En 42: 53: Climate Conference for Latin America and the Caribbean 54: 28 Nov.-03 Dec. <1983> 56: Paipa 57: CO 58: DME 59: PROSAT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 87: COLHEITA 87: PRODUTIVIDADE 91: FDB-19921216 92: FDB-MLR 101: D MFN: 2501 1: SID/SCD 2: 3238 3: INPE-3238-PRE/ 4: CEA 5: MC 6: am 7: [07] 10: Zamlutti, Carlos Jose 12: A few necessary considerations for the use of the finete element methods by non-specialists 40: Pt 41: En 42: 53: Congresso da Sociedade Brasileira de Matematica Aplicada e Computacional, 4., Sao Jose dos Campos, SET. 1983 54: Set. <1983> 56: SÆo Jos‚ dos Campos 58: DAE 59: IONO 61: 64: <1983> 68: PRE 76: AERONOMIA 91: FDB - 19980814 92: FDB - EGCF MFN: 2778 1: SID/SCD 2: 4345 3: INPE-4345 4: CEA 5: MC 6: am 10: Trivedi, Nalin Balbul 10: LANZEROTTI,L.J. 10: WOLF,A. 10: MACLENNAN,C.G. 10: MEDFORD,L. 12: FTE LIKE VARIATIONS IN THE GEOMAGNETIC FIELD AT GROUND BASED CONJUGATE STATIONS IN THE CUSP REGIONS 14: 17 53: ReuniÆo Anual da Sociedade Brasileira para o progresso da Ciˆncia, 29 54: jul. <1987> 56: Brasilia 58: DGE 59: GEOMA 61: 64: <1983> 68: PRE 76: GEOFÖSICA ESPACIAL 91: 8707 MFN: 2802 1: SID/SCD 2: 4430 3: INPE-4430-PRE/1232 5: MP 6: m 7: ASF 16: Villela Neto, Thyrso 16: MEINHOLD,P. 16: LUBIN,P. 18: SEARCH FOR FLUCTUATIONS IN THE COSMIC BACKGROUND RADIATION 20: 18 58: DAS 59: 901105 64: <1983> 68: RPQ 91: 8711 MFN: 3818 1: SID/SCD 2: 1063 3: INPE-1063 4: COMP 5: MC 6: am 7: 000 10: MIASHIRO,W.M. 10: VELASCO,F.R.D. 12: ALGUNS ASPECTOS DA DETECAO E CORRECAO DE ERROS SINTATICOS EM PROGRAMAS DE COMPUTADOR 53: SEMISH - SEMINARIO INTEGRADO DE SOFTWARE E HARDWARE 54: 25-29 jul. <1983> 56: Campinas 58: LAC 59: 12091X 61: 64: <1983> 68: PRE 91: 8306 MFN: 4413 1: SID/SCD 2: 2250 3: INPE-2250 4: CEA 5: S 6: as 10: Piazza, Liliane Rizzo 10: Kaufmann, Pierre 10: PARDO,P.R. 12: V.L.F. IONOSONDE AND LONG-DISTANCE PROPAGATION ANOMALIES PRODUCED BY GALATIC CEN X-4 X-RAY BURST IN MAY 1979 14: 121-125 30: Journal Atmosphric and Terrestrial Physics 31: 45 32: 2/3 58: CRAAE 59: RADIO 61: 64: <1983> 68: PRE 76: RADIOASTRONOMIA 91: 8303 MFN: 4465 1: SID/SCD 2: 2325 3: INPE-2325-PRE/080 4: CEA 5: S 6: as 10: Venkataraman, Nellore S. 10: Rama Rao, kondapalli 12: Prelaunch estimates of near Earth satellite lifetimes using quasi-dynamic atmosphere models - application to a proposed Brazilian satellite 14: 151-160 30: Journal of Astronautics Science 31: 31 32: 1 42: 58: DGE 59: 34110X 61: 64: Jan.-Mar. <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: AERODYNAMIC COEFFICIENTS 88: ATMOSPHERIC DENSITY 88: ORBIT DECAY 88: SATELLITE LIFETIME 88: ATMOSPHERIC TEMPERATURE 88: DYNAMIC MODELS 88: EXOSPHERE 88: KINETIC THEORY 88: PERTURBATION THEORY 83: A rapid prelaunch estimate of near Earth satellite lifetimes using the small perturbation theory is calculated. A quasi-dynamic atmospheric model is used employing a different exospheric temperature every three months. The drag coefficient is calculated using kinetic theory 91: 8303 MFN: 4470 1: SID/SCD 2: 2336 3: INPE-2336 4: CEA 5: S 6: as 7: 000 10: Kaufmann, Pierre 10: STRAUSS,F.M. 10: Costa, Joaquim Eduardo Rezende 10: DENNIS,B.R. 10: KIPLINGER,A. 10: FROST,K.J 10: ORWIG,L.E. 12: MICROWAVE AND HARD X-RAY OBSERVATIONS OF A SOLAR FLARE WITH A TIME RESOLUTION OF BETTER THAN 100MS 14: 311-319 30: SOLAR PHYSICS 31: 84 32: : 58: CRAAE 59: RADIO 61: 64: <1983> 68: PRE 76: RADIOASTRONOMIA 91: 8306 MFN: 4518 1: SID/SCD 2: 2414 3: INPE-2414 4: ETES 5: S 6: as 10: Carleial, Aydano Barreto 12: OUTER BOUNDS ON THE CAPACITY OF INTERFERENCE CHANNELS 14: 602-606 30: IEEE TRANS. ON INFORMATION THEORY 31: IT29 32: 4 53: IEEE International Symposium on Information Theory 54: 21-25 June <1982> 56: Les Arcs 58: DSS 59: 331015 61: 64: July <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: 8307 MFN: 4586 1: SID/SCD 2: 2537 3: INPE-2537 4: CEA 5: S 6: as 10: Abraham, Zulema 10: Costa, Joaquim Eduardo Rezende 10: Kaufmann, Pierre 12: TECNICAS DE IMAGEAMENTO E SENSORIAMENTO REMOTO DE OBJETOS ASTROFISICOS EM MICRO-ONDAS MILIMETRICAS. 30: CIENCIA HOJE, 58: CRAAE 59: RADIO 61: 64: <1983> 68: PRE 76: RADIOASTRONOMIA 91: 8309 MFN: 4596 1: SID/SCD 2: 2562 3: INPE-2562 4: FISMAT 5: MP 6: m 16: FERREIRA DA SILVA,A. 16: MICNAS,R. 16: CUNHA LIMA,I.C. 16: KISHORE,R. 18: THE IMPURITY CONDUCTION ON N-TYPE CDS: A TWO BAND APPROACH. 12P. 58: LAS 59: 602108 64: <1983> 68: RPQ 91: 8312 MFN: 4601 1: SID/SCD 2: 2592 3: INPE-2592 4: cea 5: S 6: as 7: 000 10: GUIMARAES,P.S. FERREIRA,L.G. 12: ON THE VALIDITY OF THE CLUSTER METHOD FOR CRYSTALS 14: 99-110 30: Revista Brasileira de Fisica 31: 13 32: : 40: Pt 41: PT 42: 58: DGE 59: 602108 61: 64: <1983> 68: PRE 76: GEOFISICA ESPACIAL 91: 8302 MFN: 4609 1: SID/SCD 2: 2609 3: INPE-2609 4: FISMAT 5: MP 6: m 16: CUNHA LIMA,I.C. 16: FERREIRA DA SILVA,A. 16: FABBRI,M. 18: TWO-DIMENSIONAL DENSITY OF STATES FOR ELECTRONS BOUND TO IMPURITIES INSIDE INVERSION LAYERS AT THE SEMICONDUCTOR-INSULATORS INTERFACE 58: LAS 59: 602108 64: <1983> 68: RPQ 91: 8312 MFN: 4614 1: SID/SCD 2: 2619 3: INPE-2619 4: ETES 5: MP 6: m 16: Santana, Carlos Eduardo 16: Castro, A.M.H. 16: GalvÆo, B.S.M.C. 16: Marshall, Paulo Melo 16: Cividanes, Lucio Baptista Trannin 18: Conversor WEFAX-II descri‡Æo t‚cnica. 42: 58: ETE 58: LIT 58: DEA 59: 331015 64: <1983> 68: RTR MFN: 4619 1: fSID/SCD 2: 2629 3: INPE-2629-NTI/173 4: ETES 5: MP 6: m 16: Ceballos, D‚cio Castilho 18: Uma estrutura geral para o software de aplica‡Æo ao controle de sat‚lites 58: DMC 59: TEREAL 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: NTC 76: ENGENAHRIA DE TECNOLOGIA ESPACIAL 87: controle de missäes espaciais 87: centro de controle 87: processamento em tempo real 87: desenvolvimento de software 83: Uma estrutura de "software" de aplica‡Æo com caracter¡sticas de modularidade e flexibilidade para o controle de missäes espaciais que envolvam sat‚lites artificiais ‚ apresentada. A flexibilidade resulta do fato de que os subsistemas podem ser invocados quase independentemente de qualquer seqˆncia. A estrutura modular resulta do fato de que cada subsistema tem um n£mero m¡nimo de interfaces com cada outro subsistema. A estrutura modular facilita o desenvolvimento, as adapta‡äes para novas missäes e a implementa‡Æo do "software" acima, com recursos computacionais m¡nimos. 0 "software" ‚ classificado quanto a carga computacional em dois grupos. 0 primeiro, indicado para computadores de grande porte, caracteriza-se por utilizar razo vel quantidade de mem¢ria, precisÆo de calculo e requerer processamento esparso. O segundo sugere a utiliza‡Æo de processamento distribu¡do em minicomputadores, por requerer processamento intensivo e repetitivo, pouca mem¢ria, pouca precisÆo e baixos tempos de resposta. Requisitos de desempenho e de qualidade bem como aspectos de implementa‡Æo sÆo abordados. Descreve-se um sum rio dos principais eventos envolvidos no lan‡amento e manuten‡Æo de um sat‚lite na ¢rbita de servi‡o MFN: 4624 2: 2639 5: MP 6: m 7: 000 16: SILVA,O.O. DIAS,H.M.S. 18: A FORMULA FOR CALCULATING LAGRANGE COEFFICIENTS 20: 000 58: 0507 59: 601039 61: NE 64: <1983> 68: RPQ 91: 8302 MFN: 4630 1: SID/SCD 2: 2649 3: INPE-2649-RPI/076 4: ETS 5: MP 6: m 16: Moro, JoÆo 18: Simula‡Æo do movimento e de observa‡äes de atitude de sat‚lites artificiais terrestres 20: 101 58: DMC 59: ORBAT 62: INPE 64: <1983> 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle de atitude 87: sat‚lites artificiais 87: simula‡Æo do movimento 87: tempo real 83: Este trabalho apresenta a simula‡Æo num‚rica do movimento e de observa‡äes de atitude para sat‚lites artificiais terrestres a baixa altura.0 objetivo ‚ fornecer condi‡äes de teste para procedimentos estat¡sticos de determina‡Æo de atitude e quaisquer outros procedimentos que necessitem dados sobre o movimento e observa‡Æo de um sat‚lite a baixa altitude.0 modelo matem tico de gera‡Æo de atitude, composto por um conjunto de equa‡äes dinƒmicas e outro conjunto de equa‡äes cinem ticas, inclui influˆncias da atmosfera, da radia‡Æo solar direta, do albedo terrestre, da radia‡Æo terrestre, e do gradiente de gravidade sistema de coordenadas fixo no sat‚lite, com os vetores sat‚lite-sol e sat‚lite-terra. SÆo apresentados os resultados da simula‡Æo do movimento e de observa‡äes de atitude para um sat‚lite t¡pico MFN: 4631 1: SID 2: 2650 3: INPE-2650-PRE/ 4: CEA 5: S 6: as 10: Sandell, G. 10: Scalise Jr.,Eugenio 10: BRAZ,M.A. 12: The H2O/OH maser 342.01+0.25: a case of supernova-induced star formation? 14: 139-142 30: Astronomy and Astrophysics 31: 124 32: 1 58: DAS 59: RADIO 61: 64: July <1983> 68: PRE 76: ASTROFÖSICA 88: Maser 88: OH sources 88: IR sources 88: supernova remmants 88: radio frequency lines: molecular lines 88: star formation 88: ate type stars 83: We have detected time variable H20 emission toward the 1612/1667 MHz OH maser OH 342.01 + 0.25. The maser is seen the direction of a windswept dark nebula interacting with the supernova remnant Kes 45. The maser has no optical counterpart, although it is a rather bright object in the IR (L = 2.8 3). The rapid temporal variations of the H2O maser suggest that the maser is associated with a young object and not a late type star. Possibly the H2O/1667 MHz OH maser originates in an object not associated with the 1612 MHz OH/IR source. If the H2O maser is young, the close association with Kes 45 may represent an example of supernova-induced star formation 91: 8312 MFN: 4633 1: SID/SCD 2: 2652 3: INPE-2652-RPI/078 4: ETES 5: MP 6: m 16: Orlando, Valcir 18: T‚cnicas de pr‚-processamento e valida‡Æo de dados em determina‡Æo de ¢rbita e atitude de sat‚lites artificiais 58: DMC 59: TEREAL 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENAHRIA DE TECNOLOGIA ESPACIAL 87: pr‚-processamento 87: telemetria 87: rastreamento 87: sat‚lites artificiais 87: dados 83: E apresentado um estudo relativo ao pr‚-processamento de dados de rastreamento e de telemetria de sat‚lites artificiais. Apresenta-se tamb‚m descri‡Æo resumida das t‚cnicas utilizadas para transm¡ssÆo de dados, com ˆnfase aos sistemas de transmissÆo digitais, cujo conheci mento e £til para melhor compreensÆo de algumas fases de pr‚-processamento descritas.  dada uma visÆo geral dos v rios procedimentos caracter¡sticos ao pr‚-processamento. Para cada um desses procedimentos sÆo descritos m‚todos normalmente utilizados para sua elabora‡Æo pr tica. Propäe-se um plano de trabalho para a implementa‡Æo do subsistema de pre-processamento de dados de rastreamento e telemetria, para atender as necessidades relativas as missäes espaciais brasileiras completas MFN: 4636 2: 2655 5: MP 6: m 16: SILVA,C.M. 18: PROJETO DE AMPLIFICADORES LINEARES DE FAIXA LARGA EM MICROONDAS COM AUXILIO DE COMPUTADOR 20: 67 58: 6106 59: 331015 64: <1983> 68: RPQ 91: 8302 MFN: 4638 1: SID/SCD 2: 2657 3: INPE-2657-PRE/270 4: ETES 5: MP 6: M 16: Krishana Murty, A.V. 18: On the shear deformation theory for dynamic analysis of beams 58: DMC 59: ESTRUT 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENAHRIA DE TECNOLOGIA ESPACIAL 88: beans 88: solid mechanics 88: structural dynamics 83: Timoshenko's shear deformation theory is widely used for the dynamical analysis of shear flexible beams. This paper presents a comparative study of the shear deformation theory with a higher order model, of wich Timoshenko's shear deformation model is a special case. Results indicate that while Timoshenko's shear deformation theory gives reasonably accurate information regarding the set of bending natural frequencies, there are considerable discrepancies in the information it gives regarding he mode shapes and dynamic response, and so there is a need to considered higher order models for the dynamical analysis of flexure of beams MFN: 4639 18: Um modelo para estimacao do rendimento do milho aplicado ao Estado de Sao Paulo 20: 178 50: Instituto de Pesquisas Espaciais 51: Mestre 58: LAC 58: SPG 62: INPE 64: <1983> 66: Sao Jose dos Campos 67: BR 68: TDI 90: b 87: MILHO 87: PREVISAO DE SAFRA 87: PRODUTIVIDADE 82: 91: 8303 1: SID/SCD 2: 2658 3: INPE-2658-TDL/118 4: COMP 5: T 6: m 7: [07] 16: Celaschi, Walter MFN: 4642 1: SID/SCD 2: 2666 3: INPE-2666 4: FISMAT 5: S 6: as 7: 000 10: PERONDI,L.F. 10: KISHORE,R. 12: INFLUENCIA DOS ESTADOS DE CONDUCAO SOBRE AS PROPRIEDADES ELETRONICAS DE SEMICONDUTORES DOPADOS 14: 395-404 30: R. BRAS. FIS., V.ESP. 32: : 58: LAS 59: 602108 61: 64: Fev. <1983> 68: PRE 91: 8302 MFN: 4643 1: SID/SCD 2: 2667 3: INPE-2667 4: FISMAT 5: S 6: as 10: KISHORE,R. 12: ELECTRON CORRELATION IN NARROW BAND SYSTEMS 14: 380-386 30: R. BRAS. FIS., V.ESP 58: LAS 59: 602108 61: 64: Fev. <1983> 68: PRE 91: 8302 MFN: 4644 1: SID/SCD 2: 2668 3: INPE-2668 4: FISMAT 5: S 6: as 10: GUIMARAES,P.S. 12: A CRYSTALLINE CLUSTER METHOD FOR DEEP IMPURITIES IN INSULATORS 14: 448-452 30: R. BRAS. FIS., V.ESP 58: LAS 59: 602108 61: 64: Feb. <1983> 68: PRE 91: 8302 MFN: 4645 1: SID/SCD 2: 2669 3: INPE-2669 4: FISMAT 5: S 6: as 10: FABBRI,M. 10: FERREIRA DA SILVA,A. 12: IMPURITY STATES IN N-TYPE MANY-VALLEY SEMICONDUCTORS 14: 370 30: R. BRAS. FIS., V.ESP. 58: LAS 59: 602108 61: 64: Feb. <1983> 68: PRE 91: 8302 MFN: 4646 1: SID/SCD 2: 2670 3: INPE-2670-TDL/121 4: ETES 5: T 6: m 16: ANDRADE,C.M. 18: Desenvolvimento de um equipamento para medida de distƒncia de ve¡culos espaciais 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: TDI 83: Este trabalho apresenta o desenvolvimento de um equipamento em banda b s¡ca para medida de distƒncia de ve¡culos espaciais, visando utiliza‡Æo na estima‡Æo de ¢rbita de sat‚lites de baixa altitude.O equipamento e constitu¡do das partes de transmissÆo e recep‡Æo. A primeira consiste basicamente na gera‡Æo do sinal de localiza‡Æo, composto de tons em 40, 160, 800, 4000 e 20000 Hz, de acordo com o padrÆo da NASA. Este sinal ‚ origina do em terra e retransmitido de volta pelo veiculo. A segunda parte consiste no estimador (receptor)de distƒncia, cujo desempenho ‚ comparado com aquele de um estimador ¢timo em termos da variƒncia do erro da medida da distancia. 0 estimador desenvolvido e- baseado em PLLs de segunda ordem que operam como filtros de faixa bem estreita para capturar os tons retransmitidos. De posse desses tons capturados, sÆo feitas as medidas da diferen‡a de fase entre os respectivos tons transmitidos e recebidos, que sÆo combinados em u-m microcomputador para estimar a distƒncia a partir desses dados 91: 8303 MFN: 4647 1: SID/SCD 2: 2672 3: INPE-2672 4: CEA 5: S 6: as 7: 000 10: TAKAKURA,T. 10: Kaufmann, Pierre 10: Costa, Joaquim Eduardo Rezende 10: DEGAONKAR,S.S. 10: OHKI,K. 10: NITTA,N. 12: SUB-SECOND PULSATIONS SIMULTANEOUSLY OBSERVED AT MICROWAVES AND HARD X-RAYS IN A SOLAR BURST 14: 317 30: NATURE 31: 302 38: En 40: En 41: 53: AAS Meeting, 161 58: CRAAE 59: RADIO 61: 64: <1983> 68: PRE 76: RADIOASTRONOMIA 91: 8312 MFN: 4650 1: SID/SCD 2: 2677 3: INPE-2677-PRE/283 5: MC 6: AM 7: 000 10: CASTRO,J.J.B. 10: MONTES FILHO,A. 12: CALCULO DA TRAJETORIA DE ELETRONS EM UMA CAVIDADE DE MICROONDAS 13: Calculation of electron trajectories in a microwave cavity 53: Encontro Regional de Mat. Aplicada e Computacional, 1 54: Feb. <1983> 56: Sao Jose dos Campos 58: LAP 59: 601101 61: NC 68: PRE 76: ELECTRONICS AND ELECTRICAL ENGINEERING 88: ELECTRON ENERGY 88: ELECTRON TRAJECTORIES 88: MICROWAVE TUBES 88: RELATIVISTIC ELECTRON BEAMS 88: ELECTROMAGNETIC FIELDS 88: ELECTRON SPIN 88: EQUATIONS OF MOTION 83: The relativistic equation describing the motion of electrons of a beam with annular cross section in the electromagnetic field of a cylindrical guide operating at TE sub 021 mode is solved numerically. Calculating the electrons energy along the cavity, the processes of energy exchange between the RF fields and the beam are investigated. It is verified that the energy extracted by the electromagnetic fields in the resonant cavity comes from the transverse rotational energy of the electrons 91: 8302 MFN: 4653 1: SID/SCD 2: 2680 3: INPE-2680 4: FISMAT 5: S 6: as 10: GUIMARAES,P.S. 10: FERREIRA,L.G. 12: ON THE VALIDITY OF THE CLUSTER METHOD FOR CRYSTALS 14: 363-367 30: R. BRAS. FIS., V.ESP 58: lLAS 59: 602108 61: 64: Feb. <1983> 68: PRE 91: 8302 MFN: 4654 1: SID/SCD 2: 2681 3: INPE-2681 4: COMP 5: T 6: m 7: 000 16: PEREIRA,J.A.G. 18: METODO DE REGISTRO DE IMAGENS USANDO TECNICAS DE TESTES SEQUENCIAIS DE HIPOTESES 50: Instituto de Pesquisas Espaciais 51: Doutor 58: SPG 59: CAP 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: COMPUTA€ÇO APLICADA 91: 8303 MFN: 4657 1: SID/SCD 2: 2687 3: INPE-2687-PRE/286 4: ETES 5: MP 6: m 16: Krishna Murty, Actyutuni Venkata 18: Analysis of sandwich beams 58: DMC 59: ESTRUT 62: INPE 64: <1983> 68: RPQ 76: ENGENAHRIA DE TECNOLOGIA ESPACIAL 88: bean theory 88: solid mechanics 88: composites 88: sandwich beans 83: A new sandwich beam theory, with provision for cubic fibre stress and quadratic shear stress distribution across the depth of the beam, has been given in this report. Classical shear deformation theory is a special case of this formulation. This theory has been applied to honey comb cored and superplastically formed diffusion bonded cored sandwich beams. From the results, it is concluded the present theory is capable of giving appropriate sress distributions through the beam, including fixed end superplastically formed diffusion bonded cored sandwich beam exhibits superior structural performance MFN: 4658 2: 2688 5: MP 6: m 7: 000 16: ABREU,A.M.C. FERNANDES,E. FARIA,F.F. 18: DIRECOES PREFERENCIAIS DE FLUXO - UM METODO GEOMETRICO PARA ANALISE PRELIMINAR DE DESEJO 20: 000 58: 0353 59: 12091X 61: NE 64: <1983> 68: RPQ 91: 8303 MFN: 4659 1: SID/SCD 2: 2691 3: INPE-2691-TDL/127 4: ETES 5: T 6: m 16: ADABO,P. 18: Sintetizadores de frequˆncia em VHF 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: TDI 83: Este trabalho consiste no estudo, projeto e implementa‡Æo pratica de sintetizadores de freqˆncias na faixa de VHF. Faz-se uma descri‡Æo das diversas t‚cnicas de s¡ntese; a mais utilizada, que apresentada em detalhes neste trabalho, ‚ a s¡ntese de freqˆncias atrav‚s de um PLL ("phase-locked loop"), tamb‚m conhecida como s¡ntese coerente indireta. Esta t‚cnica consiste basicamente na utiliza‡Æo de um PLL com um divisor program vel na malha de realimenta‡Æo. A freqˆncia de sa¡. da e- fun‡Æo do valor do divisor. Foram desenvolvidos dois sintetizadores na faixa de VHF. Um deles fornece qualquer uma das 1.200 freqˆncias entre 52,020 MHz e 87,990 MHz, com espa‡amento uniforme de 30 kHZ. A portadora SCPC ("single channel per carrier" - canal £nico por portadora)gerada por este sintetizador sai modulada em FM por um sinal de voz. Portanto este sintetizador tamb‚m tem a fun‡Æo de modulador FM. 0 outro sintetizador gera qualquer uma das 1.200 freqˆncias entre 97,020 MHz e 132,990 MHz, tamb‚m com espa‡amento uniforme de 30 kHz. Este sintetizador tem a fun‡Æo de oscilador local da esta‡Æo terrena SCPC 91: 8304 MFN: 4661 1: SID/SCD 2: 2695 3: INPE-2695-PRE/292 4: ETES 5: MC 6: am 10: ADABO,P. 12: Divisores program veis de frequˆncia de alta velocidade do tipo "Pulse Swallowing" 53: ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 16-13 jul. <1983> 56: Bel‚m 58: DMC 59: 31015 61: 64: <1983> 68: PRE 83: Este trabalho apresenta uma t‚cnica utilizada na constru‡Æo de divisores de freqˆncias program veis de alta velocidade, bem como implanta‡Æo pr tica de alguns divisores utilizados na divisÆo de freqˆncias na faixa de VHF. Esta t‚cnica permite que sejam feitas divisäes de freqˆncias por qualquer valor inteiro, utilizando apenas um £nico circuito integrado de alta velocidade, enquanto os demais divisores do circuito operam numa freqˆncia bem menor que a freqˆncia de entrada. Isto permite que haja economia de potˆncia maior facilidade de constru‡Æo do "layout" e tamb‚m redu‡Æo dos custos. Estes divisores tamb‚m sÆo conheci dos como divisores do tipo "pulse swallowing" 91: 8307 MFN: 4668 1: SID/SCD 2: 2714 3: INPE-2714-RPE/431 4: ETES 5: MP 6: m 16: Krishana Murty, A.V. 18: A new theory of cylindrical shells 20: 16 58: DMC 59: ESTRUT 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: RPQ 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: shell theory 88: elasticity 88: structures 83: Classical thin-shell theory involves a traditional inconsistency of coexisting zero transverse shear strains and nonzero transverse shear stresses. Shear deformation theories, normally, have no provision for the well-known parabolic transverse shear stress distribution across the shell wall. Avoiding these limitations, a new theory of cylindrical shells is given in this report. Thin and shear deformation shell theories are special cases in this formulation. The theory given in this report can be used directly for the study of static and dynamic behavior of cylindrical isotropic shells, and can be easily extended for composite and sandwich shells MFN: 4672 1: SID/SCD 2: 2719 3: INPE-2719 4: COMP 5: MC 6: am 10: BITTENCOURT,G. 10: DIAS,L.A.V. 12: SOLUCAO ANALITICA DE EQUACOES DIFERENCIAIS ORDINARIAS DE 1A. E 2A. ORDEM UTILIZANDO O PROGRAMA DE MANIPULACAO ALGEBRICA "REDUCE 2" 53: SIMPOSIO CASTELAN, 3 54: 27-29 abr. <1983> 56: Florianopolis 58: LAC 59: 12091X 61: 64: <1983> 68: PRE 91: 8304 MFN: 4675 1: SID/SCD 2: 2722 3: INPE-2722 4: ETES 5: MC 6: am 7: 000 10: Bergamini, Eduardo Whitaker 12: Concepts for convectivity and interoperability of world space data networks: INPE Proposal To CCSDS/Panel 3 53: Consultative Committee on Space Data Systems - Panel 3 Meeting on Electronic Communications 54: 16-17 May <1983> 56: Lanham 57: USA 58: DSS 59: 39100X 61: 64: <1983> 68: PRE MFN: 4676 1: SID/SCD 2: 2724 3: INPE-2724 4: ETES 5: MC 6: am 10: Bergamini, Eduardo Whitaker 10: Martins, Ricardo C.O. 12: concepts for a standard data interchange structure (SDIS)INPE proposal to CCSDS/Panel 2 53: Consultative Committee on Space Data Systems - Panel 2 Meeting, 54: 16-17 May <1983> 56: Lanham 57: USA 58: DSS 59: 39100X 61: 64: <1983> 68: PRE MFN: 4679 1: SID/SCD 2: 2732 3: INPE-2732-PRE/314 4: ETES 5: MC 6: am 10: ADABO,P. 12: Sintetizador/modulador para esta‡Æo terrena SCPC de telecomunica‡äes por sat‚lite 20: 36 53: ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 6-13 jul. <1983> 56: Bel‚m 58: DMC 59: 331015 61: 64: <1983> 68: PRE 83: Este trabalho consiste no estudo, projeto e implementa‡Æo pr tica de um sintetizador de freqˆncias na faixa de 52.020 MHz a 87,990 MHz, com incremento de freqˆncia igual a 30 kHz. Utiliza-se a t‚cnica de s¡ntese atrav‚s de um PLL ("phase-locked loop"), tamb‚m conhecida como s¡ntese coerente indireta. Esta t‚cnica consiste basicamente na utiliza‡Æo de um PLL, com um divisor program vel de freqˆncias na malha de realimenta‡Æo. A freqˆncia de sa¡da ‚ fun‡Æo do valor deste divisor. Este sintetizador tem tamb‚m a fun‡Æo de modulador FM e est  sendo utilizado para gerar 1200 canais diferentes em uma esta‡Æo terrena SCPC ("single channel per carrier"- canal £nico por portadora). No transmissor desta esta‡Æo, a portadora est  presente na sa¡da somente quando houver sinal de voz na entrada do modulador, ou seja, ele possu¡ tamb‚m um circuito de supressÆo deportadora 91: 8307 MFN: 4681 1: SID/SCD 2: 2735 3: INPE-2735-RPE/433 4: ETES 5: MP 6: m 16: Kuga, H‚lio Koiti 16: Medeiros, Valder de Matos 16: Carrara, Valdemir 18: C lculo recursivo da acelera‡Æo do geopotencial 19: Recursive calculation of geopotential acceleration 58: DMC 59: ORBAT 61: NE 64: <1983> 68: RPQ 88: GEOPOTENTIAL 88: RECURSIVE FUNCTIONS 88: SPHERICAL HARMONICS 88: FORTRAN 88: LEGENDRE FUNCTIONS 83: FORTRAN routines to calculate geopotential, which is modelled using Goddard Earth Model 10 (GEM10)spherical harmonic coefficients, are presented. Recursive equations are utilized in order to calculate the fully normalized Legendre polinomials in order to obtain quick processing and better numerical accuracy. The influence of each type of harmonic coefficients is illustrated separately by numerical tests MFN: 4682 1: SID/SCD 2: 2736 3: INPE-2736 4: FISMAT 5: MP 6: m 16: KISHORE,R. 18: A LOCAL SINGLE PARTICLE SELF ENERGY FOR THE HUBBARD MODEL 20: 000 58: LAS 59: 602108 64: <1983> 68: RPQ 91: 8305 MFN: 4684 1: SID/SCD 2: 2741 3: INPE-2741-PRE/320 4: ETES 5: MC 6: am 10: Cruz, Marcos Antonio Cardoso 12: Esta‡äes de teste de circuitos digitais e anal¢gicos INTAC 14: 21 53: SEMINARIO INTEGRADO DE SOFTWARE E HARDWARE, 10. (SEMISH) 54: 23-29 jul. <1983> 56: Campinas 58: DSS 59: SISMAG/PSDA 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: teste 87: ciecuito digital 87: ciecuito anal¢gico 87: estÆo de teste 87: esta‡Æo de programa‡Æo 83: Apresenta-se o sistema autom tico de teste de circuitos tais e anal¢gicos denominado INTAC, enfatizando as esta‡äes de teste o constituem. A caracter¡stica de execu‡Æo do teste em tempo real e aproximada atrav‚s do controle do rel¢gio do circuito em teste. A manipula‡Æo de sinais anal¢gicos nas esta‡äes de teste ‚ feita atrav‚s de t‚cnicas digitais MFN: 4687 1: SID/SCD 2: 2744 3: INPE-2744 4: ETES 5: T 6: m 16: Fleming, Wilson Jos‚ 18: MISTURADOR ATIVO COM FET DE PORTA DUPLA 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DSS 59: 882038 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: eletr“nica 76: telecomunica‡äes 91: 8305 MFN: 4688 1: SID/SCD 2: 2746 3: INPE-2746-PRE/322 4: ETES 5: MC 6: am 10: Fitzgibbon, Maureen Teresa Rose 10: Moraes, Rodolpho Vilhena de 10: LobÆo, Diomar Cesar 12: Compara‡Æo entre teorias anal¡ticas para o estudo de contra‡Æo de ¢rbitas de sat‚lites artificiais 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: ORBAT 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: contra‡Æo de ¢rbitas 87: m‚todos anal¡ticos 87: perturba‡äes nÆo-gravitacionais 83: Com base no m‚todo da varia‡Æo dos Parƒmetros, propäe-se uma solu‡Æo anal¡tica do sistema nÆo-can“nico de equa‡äes diferenciais referente ao movimento de um sat‚lite artificial perturbado pelos efeitos do arrasto atmosf‚rico e do geopotencial. Esta solu‡Æo ‚ comparada com a solu‡Æo cl ssica proposta por Brouwer e Hori em 1961. Apresentam-se resultados num‚ricos para o caso de um sat‚lite do tipo balÆo MFN: 4689 1: SID/SCD 2: 2747 3: INPE-2747-PRE/323 4: ETES 5: MC 6: am 10: Fran‡a, Luis Novaes Ferreira 10: Louren‡Æo, Paulo Tadeu de Mello 12: Estabilidades de atitude de um sat‚lite munido de rotor sujeito a diferentes condi‡äes de opera‡Æo 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: EDISA 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: estabilidade de atitude de sat‚lite 87: m‚todo direto de Liapunov 87: estabiliza‡Æo por rotores 83: Neste trabalho ‚ analisada a estabilidade de atitude de um sat‚lite sujeito a gradiente de gravidade, constitu¡do de uma carca‡a e de um rotor r¡gidos. O rotor pode ser operado com sua velocidade angular mantida constante, ou girando livremente. Ta¡s casos sÆo conhecidos como "vinculado" e "Livre", respectivamente. Utilizando diferentes fun‡äes de Liapunov, como a hamiltoniana ou uma combina‡Æo de integrais primeiras, as condi‡äes de estabilidade sÆo obtidas e comparadas MFN: 4690 1: sid/scd 2: 2748 3: INPE-2748-PRE/324 4: ETES 5: MC 6: am 10: Medeiros, Valder de Matos 12: Um m‚todo semi-anal¡tico de propaga‡Æo de ¢rbitas para an lise de missäes 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlandia 57: BR 58: ETE 59: ORBAT 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: m‚todo semi-anal¡tico 87: acoplamento com o geopotencial 87: teoria de propaga‡Æo de ¢rbitas 87: sat‚lite de baixa altitude 83: O trabalho apresenta uma versÆo dos atuais m‚todos semi-anal¡ticos para propaga‡Æo de ¢rbita, aplicada basicamente … analise de m¡sseis para sat‚lites de baixa altitude. O m‚todo consiste na aplica‡Æo de uma expansÆo em s‚rie de Taylor, nos elementos de varia‡Æo secular, para melhoria da precisÆo na propaga‡Æo dos elementos m‚dios da ¢rbita. Esses elementos passam a ter forma polinomial quadr tica, cujos coeficientes quadr ticos aparecem como acoplamentos do geopotencial com as demais perturba‡äes MFN: 4691 1: SID/SCD 2: 2749 3: INPE-2749-PRE/325 4: ETES 5: MC 6: am 10: Ferreira, Donizeti Leonel 10: Louren‡Æ, Paulo Tadeu de Melo 10: Tavares, Santiago Alves 12: An lise do problema de captura de um sat‚lite estabilizado por gradiente de gravidade com mastro flex¡vel durante e ap¢s a faze de esticamento 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: EDISA 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: sat‚lites artificiais 87: gradiente de gravidade 87: libra‡äes 87: flexibilidade 87: apˆndices flex¡veis 87: modos assumidos 87: captura 83: Este trabalho apresenta o estudo da captura da posi‡Æo nominal de equil¡brio de um sat‚lite estabilizado por gradiente de gravidade, possuindo apˆndice,9 flex¡veis e extens¡veis. SÆo estudadas as condi‡äes iniciais para as quais a captura ‚ poss¡vel; h  uma grande varia‡Æo de parƒmetros tais como velocidade de esticamento, posi‡Æo do centro de massa, etc. 0 objetivo ‚ avaliar a influˆncia da flexibilidade dos mastros sobre o movimento libracional de corpo r¡gido. O trabalho ‚ desenvolvido com base na formula‡Æo lagrangeana e no m‚todo dos modos assumidos MFN: 4692 1: SID/SCD 2: 2750 3: INPE-2750-PRE/236 4: ETES 5: MC 6: am 10: Tavares, Santiago Alves 10: Pinto, Ricardo Luiz Utsch de Freitas 12: Estudo da solu‡Æo de problemas de controle ¢timo na forma de bolza pelo m‚todo dos elementos finitos 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: EDISA 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle ¢timo 87: elementos finitos 83: Esse trabalho apresenta uma formula‡Æo para aplicar o m‚todo de elementos finitos ao problema de controle ¢timo na forma de Bolza. Este foi armado na forma de problema de otimiza‡Æo, com a fun‡Æo- objetivo e os v¡nculos. Em seguida foi aplicado o conceito de elementos finitos e a obten‡Æo dos parƒmetros de solu‡Æo foi feita com um m‚todo de res¡duos ponderados (Galerkin). Deste modo, foi transformado em um de programa‡Æo matem tica, cuja solu‡Æo foi obtida com os m‚todos de gradiente conjugado e proje‡Æo do gradiente MFN: 4693 1: SID/SCD 2: 2751 3: INPE-2751-PRE/327 4: ETES 5: MC 6: am 10: Krishna Murty, A.V. 12: On the theory of flexure 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: ESTRUT 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: solid mechanics 88: theory of flexure 83: The differential equation for the line loads uniformly distributed along a parallel circle is established from the homogeneous differential equations governing the bending behavior of a conical shell. The solution by means of the Green Functions is analysed, the conditions to be satisfied and the form of the function for any supported condition. The complex Green Function constants are calculated and its form is modified for obtaining the real and complex parts of the function in adequate form and, following this, for developing the stress and strain expressions MFN: 4694 1: SID/SCD 2: 2752 3: INPE-2752-PRE/328 4: ETES 5: MC 6: am 10: Tavares, Santiago Alves 10: Altman, Wolf 12: Sistema digital para aquisi‡Æo de dados ambientais em fita cassete 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: 34110X 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: structure 88: shell stress 88: conical shell 83: The differential equation for the line loads uniformly distributed along a parallel circle is stablished from the homogeneous differential equations governing the bending behavior of a conical shell. The solution by means of the Green Functions is analyzed, the conditions to be satisfied and the form of the function for any supported condition. The complex Green Function constants are calculated and its form is modified for obtaining the real and complex parts of the function in adequate form and, following this, for developing the stress and strain expression MFN: 4695 1: SID/SCD 2: 2753 3: INPE-2753-PRE/329 5: MC 6: AM 10: Abrao, Bilogna 10: Venkataraman, Nellore S. 12: Supersonic nozzle design for a low density wind tunnel 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: TUNEL 61: 64: <1983> 68: PRE 88: GAS DYNAMICS 88: LOW DENSITY WIND 88: TUNNELS 88: SUPERSONIC NOZZLES 88: FLOW DISTRIBUTION 88: RAREFIED GASES 88: SYMMETRY 83: A method to determine the contour of an axisymmetric nozzle of a low density wind tunnel, to produce a supersonic, parallel and uniform flow in the test section is described. The method of characteristics is used to obtain the isentropic profile which is then corrected for boundary layer growth. The influence of the nozzle geometry on the flow parameters is analyzed MFN: 4696 1: SID/SCD 2: 2754 3: INPE-2754-PRE/330 4: ETES 5: MC 6: am 10: Moro, JoÆo 10: Carrara, Valdemir 12: Simula‡Æo e analise de altitude de sat‚lites terrestres de baixa altitude 13: Simulation and analysis of low altitude terrestrial satellites 20: 13 53: Brazilian Mech. Eng. Congr., 7 (COBEM); ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 13-16 dez. <1983> 56: Uberlƒndia 57: BR 58: DMC 59: ORBAT 61: 64: <1983> 68: PRE 88: ARTIFICIAL SATELLITES 88: SATELLITE ATTITUDE CONTROL 88: STATISTICAL ANALYSIS 88: COMPUTERIZED SIMULATION 88: MATHEMATICAL MODELS 88: PERTURBATION THEORY 88: RIGID STRUCTURES 83: A numerical simulator of attitude motion and related observations for Earth artificial satellites is presented. The purpose is to provide test conditions for attitude determination using statistical procedures. The mathematical model of attitude is a rigid body and includes the perturbations due to interaction with the space environment. The simulated data consist of Sun angles measurements, which are the arc-length separation between the attitude and the Sun, and radio angles measurements which are the arc-length separation between the attitude and the center of Earth MFN: 4697 1: SID/SCD 2: 2755 3: INPE-2755-PRE/331 4: ETES 5: MC 6: am 10: Orlando, Valcir 10: Maizza Neto, Octavio 12: Algoritmo para controle em tempo real de sistema com nao-linearidade separada aplicado ao controle de apontamento de sistemas de rastreamento de satelites artificiais 42: 53: Congresso Brasileiro de Engenharia Mecanica, 7 (COBEM) 55: 13-16 dez <1983> 56: Uberlandia 57: BR 58: DMC 59: TEREAL 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle de tempo real 87: sistemas de rastreamento 87: sat‚lites aerificiais 87: sistemas nÆo-lineares 83: Este trabalho apresenta o desenvolvimento de um algoritmo num‚rico para controle de apontamento em tempo real de sistemas de rastreamento de sat‚lites artificiais. A fun‡Æo de, nÆo-linearidade ‚ tratada como a vari vel de controle do sistema. Os valores da vari vel de controle verdadeira sÆo obtidos por inversÆo dessa fun‡Æo. O algoritmo ‚ testado na simula‡Æo do rastreamento de um sat‚lite artificial de baixa altitude por dois sistemas de rastreamento corrente mente em uso. MFN: 4698 1: SID/SCD 2: 2756 3: INPE-2756-PRE/332 4: ETES 5: MC 6: am 10: Louren‡Æo, Paulo Tadeu de Mello 10: Kuga, H‚lio Koiti 10: Maizza Neto, Oct vio 12: An lise simplificada do problema de captura para um sat‚lite artificial estabilizado por gradiente de gravidade 20: 11 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: EDISA 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: dinƒmica de sat‚lites 87: gradiente de gravidade 87: captura da orienta‡Æo 83: Propäe-se uma estrat‚gia para levar um sat‚lite estabilizado por gradiente de gravidade … posi‡Æo nominal de opera‡Æo (atitude), atrav‚s de esticamentos e recolhimentos de um mastro estabilizador. Inicialmente sÆo feitas considera‡äes baseadas nas leis de conserva‡Æo da quantidade de movimentos angular e na integral de Jacob¡ do movimento. A seguir sÆo apresentados resultados de integra‡Æo num‚rica que sÆo comparados com os correspondentes resultados anal¡ticos MFN: 4699 1: sid/scd 2: 2757 3: INPE-2757-PRE/333 4: ETES 5: MC 6: am 10: Rios Neto, Atair 10: Silva, Wilson Cust¢dio Canesin da 12: Procedimento semi-analitico baseado em estima‡Æo de parƒmetros para propaga‡Æo de ¢rbitas de sat‚lites artificiais 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 57: BR 58: DMC 59: ORBAT 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: propaaga‡Æo de ¢rbita 87: expressäes anal¡ticas simplificadas 87: teoria de estima‡Æ de parƒmetros 83: Trata-se de um procedimento para propagar a ¢rbita de sat‚lites artificiais terrestres atrav‚s de expressäes matem ticas parametrizadas. Mediante o uso de dados simulados de observa‡Æo, durante o intervalo de um per¡odo, e com o auxilio da Teoria de Estima‡Æo de Parƒmetros, particularmente da t‚cnica do filtro de Kalman, estimam-se os parƒmetros das equa‡äes. Obtidas as equa‡äes que representam a varia‡Æo no tempo dos elementos da ¢rbita, esta pode ser propagada com consider vel economia de esfor‡os computacionais MFN: 4700 1: SID/SCD 2: 2758 3: INPE-2758-PRE/334 4: ETES 5: MC 6: am 10: Venkataraman, Nellore Srinivasan 10: Carrara, Valdemir 12: The modelling of forces and torques on near Earth satellites- Application to a proposed brazilian satellites 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 57: BR 58: DMC 59: AERO 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 88: satellite forces 88: satellite aerodynamics 88: attitude controle 83: The free molecular of rarefied gas dynamics and simple radiation theory are used to calculate the forces and torques on the proposed first Brazilian satellite. The direct solar radiation, albedo and earth emitted radiation are taken into account. The variation of these forces with the pertinent parameters as well as their orbital ariations are discussed MFN: 4705 1: SID/SCD 2: 2763 3: INPE-2763-PRE/337 4: ETES 5: MC 6: am 10: Ferreira, Donizete Leonel 10: Louren‡Æo, Paulo Tadeu de Mello 10: Maizza Neto, Oct vio 12: An lise de sensitividade da influencia da flexibilidade de apˆndices sobre a dinƒmica da atitude de sat‚lites artificiais 53: Congresso Brasileiro de Engenharia Mecƒnica, 7 (COBEM) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: EDISA 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: SATLITES ARTIFICIAIS 87: MOVIMENTO DE ATITUDE 87: PAINIS FLEXÖVEIS 87: AUTOVALORES E AUTOVETORES 87: SENSITIVIDADE 87: CONTROLE MODAL 83: Estuda-se o movimento de um sat‚lite estabilizado por rota‡Æo, com dois pain‚is solares flex¡veis. As equa‡äes de movimento sÆo obtidas atrav‚s do formalismo lagrangeano e do m‚todo dos mo dos assumidos. Estuda-se a influˆncia da flexibilidade atrav‚s da sensitividade dos autovalores e autovetores. Utiliza-se o m‚todo do posicionamento de p¢Ios para minimizar os efeitos da elasticidade sobre o movimento de corpo r¡gido MFN: 4706 1: SID/SCD 2: 2764 3: INPE-2764 4: ETES 5: MC 6: am 10: Cruz, Marcos Antonio Cardoso 12: INTAC - LINGUAGEM DE TESTE DE CIRCUITOS DIGITAIS E ANALOGICOS 53: SEMISH - SEMINARIO INTEGRADO DE SOFTWARE E HARDWARE, 10 54: 25-29 jul. <1983> 56: Campinas 58: DSS 59: 12091X 61: 68: PRE 91: 8307 MFN: 4708 1: SID/SCD 2: 2766 3: INPE-2766-PRE 4: COMP 5: MC 6: am 10: CONTADOR,J.L. 10: Yanasse, Horacio Hideki 12: UM SISTEMA DE PLANEJAMENTO AGREGADO DE ESTOQUES 53: SIMPOSIO BRASILEIRO DE PESQUISA OPERACIONAL, 16 54: out. <1983> 56: Florianopolis 58: LAC 59: 12091X 61: 68: PRE 76: COMPUTACAO APLICADA 91: 8310 MFN: 4710 1: SID/SCD 2: 2768 3: INPE-2768-PRE 4: COMP 5: MC 6: am 10: HIRATA,C.M. 10: Yanasse, Horacio Hideki 12: MEDICAO DE ERROS DE UMA APROXIMACAO DETERMINISTICA PARA UM PROBLEMA DE PLANEJAMENTO DE PRODUCAO ESTOCASTICO 42: 53: SIMPOSIO BRASILEIRO DE PESQUISA OPERACIONAL, 16 54: out. <1983> 56: Florianopolis 58: LAC 59: 12091X 61: 64: <1983> 68: PRE 76: COMPUTACAO APLICADA 91: 8310 MFN: 4717 1: SID/SCD 2: 2778 3: INPE-2758-PRE/334 4: ETES 5: MC 6: am 10: Ceballos, D‚cio Castilho 12: Simuladores digitais de sistemas de controle descentralizados em subsistemas aut“nomos para processamento concorrente 13: The modelling for forces and torques on near Earth satellites: Application to a proposed Brazilian satellite 53: Congresso Brasileiro de Engenharia Mecƒnica 7 (COBEM); ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 13-16 dez. <1983> 56: Uberlƒndia 58: DMC 59: TEREAL 61: 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: SIMULA€ÇO 87: SISTEMAS DE CONTROLE 87: PROCESSAMENTO DISTRIBUÖDO 87: PROCESSOS CONCORRENTES 88: ARTIFICIAL SATELLITES 88: GAS DYNAMICS 88: TORQUE 88: ALBEDO 88: BRAZILIAN SPACE PROGRAM 88: RAREFIED GASES 88: SOLAR RADIATION 83: The free molecular theory of rarefied gas dynamics and simple radiation theory are used to calculate the forces and torques on the proposed first Brazilian satellite. The direct solar radiation, albedo and Earth emitted radiation are taken into account. The variation of these forces with the pertinent parameters as well as their orbital variations are discussed MFN: 4725 1: SID/SCD 2: 2787 3: INPE-2787 4: ETES 5: MP 6: m 17: Instituto de Pesquisas Espaciais 18: RELATORIO DAS ATIVIDADES INCLUIDAS NO PNAE (EXCETO MECB), REFERENTE AO PRIMEIRO SEMESTRE DE 1983 38: Publica‡Æo reservada 40: Pt 41: Pt 42: 58: ETE 59: 924024 64: <1983> 68: RA 87: MissÆo Espacial Completa Brasileira 91: 8306 MFN: 4726 1: SID/SCD 2: 2789 3: INPE-2789 4: COMB 5: MP 6: m 16: Nobre,D.N. 16: Salles, Carlos Eduardo Rolfsen 18: INSTABILIDADE DE COMBUSTAO - MEDIDAS DE ADMITANCIA ACUSTICA EM PROPELENTES SOLIDOS 58: LCP 59: 341533 62: INPE 64: <1983> 68: NTC 76: COMBUSTAO 87: combustÆo com aplica‡Æo em propulsÆo MFN: 4728 1: SID/SCD 2: 2792 3: INPE-2792 4: ETES 5: T 6: m 16: Cruz, Marcos Antonio Cardoso 18: INTAC - UMA INTERFACE DE TESTE AUXILIADA POR COMPUTADOR 50: Instituto de Pesquisas Espaciais 51: Mestre 58: SPG 58: DSS 59: CMC 62: INPE 64: mar. <1983> 68: TDI 76: ELETRâNICA E TELECOMUNICACOES MFN: 4729 1: SID/SCD 2: 2795 3: INPE-2795-PRE/357 4: ETES 5: MC 6: am 10: Tude, Eduardo Antonio Parada 10: FRUEH,W. 12: SUBSISTEMA DUPLEXADOR PARA ESTACAO TERRENA EM 6/4 GHZ 13: Subsystem duplexer for a 6-4 GHz Earth station 53: ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 6-13 jul. <1983> 56: Bel‚m 58: DEA 59: 331015 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: PRE 88: DESIGN ANALYSIS 88: DUPLEXERS 88: EARTH TERMINALS 88: SIGNAL PROCESSING 88: SYSTEMS ENGINEERING 88: CIRCULAR POLARIZATION 88: INSERTION LOSS 88: LINEAR POLARIZATION 88: SHORT WAVE RADIATION 88: SIGNAL RECEPTION 88: SIGNAL TRANSMISSION 83: The subsystem that separates the transmission and receives signals in the 6/4 GHz ground/station, is described. The subsystem is composed of the duplexer, transitions and filters. The design and test of these components are considered components are presented. VSWR little than 1.15, isolations better than 100 dB and insertion loss little than 0.2 dB are measured 91: 8307 MFN: 4730 1: SID/SCD 2: 2796 3: INPE-2796-PRE/358 4: ETES 5: MC 6: am 10: Barretti, M.S. 10: Adabo, P. 12: Sintetizadores de frequÒncias de microondas de baixo ru¡do de fase 13: Low noise microwave frequency synthesizers 53: ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 6-13 jul. <1983> 56: Bel‚m 58: DMC 59: 331015 61: 64: <1983> 68: PRE 88: FREQUENCY SYNTHESIZERS 88: MICROWAVE EQUIPMENT 88: MICROWAVE FREQUENCIES 88: MICROWAVE TRANSMISSION 88: RADIO COMMUNICATION 88: CRYSTAL OSCILLATORS 88: FREQUENCY STABILITY 88: HIGH FREQUENCIES 88: LOW NOISE 88: PHASE LOCKED SYSTEMS 88: SATELLITE COMMUNICATION 83: Satellite communication systems generally require the use of a low noise microwave synthesizer with high frequency stability and low spurious level. The design and construction of a synthesizer over the range 4745 MHz to 5380 MHz, with steps of five MHz was described. The signal is synthesized from a cavity voltage controlled oscillator (VCO)tunable over the range 1186.25 MHz to 1345 MHz. Both the voltage controlled crystal oscillator (VCXO)and the cavity VCO are phase-locked with the same reference signal. The two signals are mixed to allow the division in the VHF band, that is simpler. Finally the cavity VCO output is multiplied by four, generating the frequency band specified above 91: 8307 MFN: 4732 1: SID/SCD 2: 2798 3: INPE-2798-PRE/359 4: ETES 5: MC 6: am 10: Colla, N.H. 10: Violaro, F. 12: Processamento anal¢gico de voz para transmissÆo FM de um canal telef“nico 53: ReuniÆo Anual da Sociedade Brasileira para o Processo da Ciˆncia, 35 (SBPC) 54: 6-13 jul. <1983> 56: Bel‚m 58: DMC 59: 331015 61: 64: <1983> 68: PRE 83: Este trabalho consta do projeto de um circuito para processa mento de voz, cuja finalidade ‚ modificar apropriadamente o sinal de  udio de forma a obter uma alta rela‡Æo sinal/ru¡do com o m¡nimo consumo de potˆncia, pelo uso de compansÆo, pr‚-ˆnfase e deˆnfase.O compansor consta do compressor (na transmissÆo)e do expansor (na recep‡Æo). O compressor diminui a faixa dinƒmica do sinal de voz, o que permite um aproveitamento mais eficiente da faixa de transmissÆo de um canal FM, melhorando tanto a rela‡Æo sinal/ru¡do de sinais baixos como a diafonia provocada por sinais fortes. O expansor restaura a sinal de voz … sua faixa dinƒmica original e melhora o ru¡do intersil bico e de canal vago. A deˆnfase na recep‡Æo, serve para uniformizar a distribui‡Æo do ru¡do ao longo da faixa do canal. Para evitar sobre desvio ‚ usado um limitador, o qual atua, juntamente o compressor, como um AGC r pido, para evitar intermodula‡Æo.  previsto o uso de sinaliza‡Æo de linha E M pulsada, enviada atrav‚s de um tom de 3825 Hz. A faixa do sinal de voz ‚ de 300 a 3400 Hz 91: 8307 MFN: 4733 1: SID/SCD 2: 2800 3: INPE-2800 4: ETES 5: MC 6: am 10: Bergamini, Eduardo Whitaker 12: Review on packet telemetry and concepts on packet telecomand: INPE proposal to CCSDS/Panel 1 53: CCDS Panel 1 Meeting on Telemetry, Tracking and Telecomand 54: 4-8 July <1983> 56: Darmstadt 58: DSS 59: 39100X 61: 64: <1983> 68: PRE MFN: 4736 1: SID/SCD 2: 2803 3: INPE-2803-PRE 4: COM 5: MC 6: am 10: PERCHE,G.E. 12: PROJETO DE UM PROPULSOR IONICO 14: 15 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 jul. <1983> 56: Belem 58: LCP 59: 603910 61: 64: <1983> 68: PRE MFN: 4738 1: SID/SCD 2: 2805 3: INPE-2805-PRE/365 4: ETES 5: MC 6: AM 7: 000 10: Venkataraman, N. S. 12: An analytical solution for the temperature distribution of mounting plates of satellites 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 Jul. <1983> 56: Belem 58: DMC 59: 34110X 61: 68: PRE 88: ARTIFICIAL SATELLITES 88: PLATES (STRUCTURAL MEMBERS) 88: TEMPERATURE DISTRIBUTION 88: CONDUCTIVE HEAT TRANSFER 88: THERMAL RESISTANCE 83: An analytical solution was obtained for the temperature distribution in a thin rectangular plate with two regions of internal heat generation. One of the sides is subjected to a constant heat flux, while the others are at specified temperatures. The problem was resolved by using linear superposition and an image technique MFN: 4739 1: SID/SCD 2: 2806 3: INPE-2806-PRE 4: COMB 5: MC 6: am 10: Calegao, Isabel Cristina Coelho 10: Freitas, Antonio Gon‡alves de 12: Prepara‡Æo de hidrazina anidra 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC),35 54: 6-13 jul. <1983> 56: Belem 58: LCP 59: 341533 61: 64: <1983> 68: PRE 76: COMBUSTAO 87: cat lise 87: prepara‡Æo de catalisadores 87: hidrazina MFN: 4741 1: SID/SCD 2: 2812 3: INPE-2812 4: ETES 5: T 6: m 16: Maldonado, Jos‚ Carlos 18: Um sistema de controle e supervisÆo de bordo 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DSS 59: 882038 62: INPE 64: mar. <1983> 66: SÆo Jos‚ dos Campos 68: TDI MFN: 4742 1: SID/SCD 2: 2813 3: INPE-2813 4: FISMAT 5: MP 6: m 16: CHEN,Y.A. 16: Bandeira, Iraja Newton 18: DETERMINACAO DO PERFIL DE COMPOSICAO EM LIGAS BINARIAS ISOMORFAS 20: 000 58: LAS 59: 602108 64: <1983> 68: RPQ 91: 8307 MFN: 4743 1: SID/SCD 2: 2814 3: INPE-2814 4: ETES 5: MC 6: am 10: Tude, Eduardo Antonio Parada 10: Chiarello, M.G. 12: ANALISE DE TOLERANCIAS DE UMA LINHA EM MICROSTRIP PELO METODO DE MONTE CARLO 53: Simp¢sio Brasileiro de Telecomunica‡äes, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 57: BR 58: DEA 59: 340006 61: 64: <1983> 68: PRE 91: 8309 MFN: 4744 1: SID/SCD 2: 2815 3: INPE-2815-PRE/371 4: ETES 5: MC 6: am 10: Adabo, P 12: Sintetizador/Modulador FM de 1200 canais para transmissÆo SCPC de sinais de voz por sat‚lites 53: SIMPOSIO BRASILEIRO DE TELECOMUNICACOES, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 58: DMC 59: 331015 61: 64: <1983> 68: PRE 83: Este trabalho apresenta o estudo, o projeto e a implementa‡Æo pr tica de um sintetizador de freqˆncias de 20,020 MHz a 87,990 MHz, com incremento de freqˆncia igual a 30 KHz utiliza-se a t‚cnica de s¡ntese atrav‚s de um PLL ("phase-locked loop"), tamb‚m conhecida como s¡ntese coerente indireta. Esta t‚cnica consiste basicamente na utiliza‡Æo de um PLL com um divisor program vel de freqˆncias na malha de realimenta‡Æo. A freqˆncia de sa¡da ‚ fun‡Æo do valor deste divisor. Este sintetizador tem tamb‚m a fun‡Æo de modulador FM e est  sendo utilizado para gerar 1200 canais diferentes em uma esta‡Æo terrena SCPC ("single channel per carrier" - canal £nico por portadora) 91: 8309 MFN: 4747 1: SID/SCD 2: 2821 3: INPE-2821 4: ETES 5: MC 6: am 10: SINHA,V. 12: A SIMPLE DOUBLE ERROR CORRECTING BCH CODEC 53: Simp¢sio Brasiliro de Telecomunica‡äes, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 58: 6106 59: 331015 61: 64: <1983> 68: PRE 91: 8307 MFN: 4748 1: SID/SCD 2: 2822 3: INPE-2822 4: ETES 5: MC 6: am 10: LONNEUX,L. 12: UMA MALHA DE RECUPERACAO DE PORTADORA PARA IMPLEMENTACAO EM MODENS PSK DE ALTA VELOCIDADE COM O RECURSO DE TECNOLOGIA DIGITAL 53: SIMPOSIO BRASILEIRO DE TELECOMUNICACOES, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 58: DEA 59: 12091X 61: 64: <1983> 68: PRE 91: 8307 MFN: 4749 1: sid/scd 2: 2823 3: INPE-2823 4: ETES 5: MC 6: am 7: 000 10: HASHIOKA,M.H. 12: ANALISE DE UMA INTERFACE DE COMUNICACAO UTILIZANDO MULTIMICROPROCESSAMENTO 53: SIMPOSIO BRASILEIRO DE TELECOMUNICACOES, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 58: DEA 59: 39100X 61: NC 68: PRE 91: 8307 MFN: 4750 1: SID/SCD 2: 2824 3: INPE-2824 4: ETES 5: MC 6: am 10: Maldonado, Jos‚ Carlos 10: Bergamini, Eduardo Whitaker 12: Um sistema de controle e supervisÆo de bordo para aplica‡äes em (multi)missäes espaciais 53: Simp¢sio Brasileiro de Telecomunica‡äes, 1 54: 5-9 Set. <1983> 55: Rio de Janeiro 58: DSS 59: 39100X 61: 64: <1983> 68: PRE MFN: 4751 1: SID/SCD 2: 2825 3: INPE-2825-RPI/080 4: ETES 5: MP 6: m 16: Lopes, Roberto Vieira da Fonseca 16: Kondapalli, Ramanuja Rao 16: Maizza Neto, Oct vio 18: Estudo preliminar de sensitividade aplicado a dinƒmica de um aviÆo 42: 58: 6653 59: DIORB 64: <1983> 68: RPI 76: ENGENAHRIA E TECNOLOGIA ESPACIAL 87: sensitividade 87: dinƒmica de aviÆo 87: teoria de controle 83: As caracter¡sticas de estabilidade dinƒmica constituem um fator muito importante a ser considerado no projeto de um aviÆo. Neste trabalho ‚ estudada a influˆncia de varia‡äes nos valores nominais de parƒmetros aerodinƒmicos e de tra‡Æo nos autovalores associa dos ao movimento longitudinal. Para tanto, utiliza-se a an lise de sensitividade. Sem a necessidade de c lculos muito elaborados obtem -se conclusäes qualitativas quanto ao grau de relevƒncia dos parƒmetros selecionados MFN: 4754 1: SID/SCD 2: 2828 3: INPE-2828 4: ETES 5: MC 6: am 10: COSTA,M.H.M. 12: LIMITANTES DA EQUIVOCACAO EM CANAIS GAUSSIANOS ADITIVOS 53: SIMPOSIO BRASILEIRO DE TELECOMUNICACOES, 1 54: 5-9 set. <1983> 56: Rio de Janeiro 58: DEA 59: 340006 61: 64: <1983> 68: PRE 91: 8307 MFN: 4757 1: SID/SCD 2: 2834 3: INPE-2834 4: FISMAT 5: MP 6: M 16: CHEN,Y.A. 16: Bandeira, Iraja Newton 18: LEAD-TIN-TELLURIDE GROWTH BY VMS UNDER MICROGRAVITY CONDITIONS 58: LAS 59: 602108 64: <1983> 68: RPQ 91: 8308 MFN: 4759 1: SID/SCD 2: 2836 3: INPE-3836-RPI/082 4: ETES 5: PM 6: m 16: Martins, Roberto Vieira 16: Carrara, Valdemir 16: Borges, Paulo Donato Allemand 18: Amortecimento dos movimentos de atitude por histerese magn‚tica do sat‚lite coleta de dados 42: 58: DMC 59: CONTAT 62: INPE 64: <1983> 66: SÆo Jos‚ dos Campos 68: RPI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: movimento amortecido 87: histerese magn‚tica 87: amortecimento magn‚tico 83: Este trabalho apresenta uma primeira an lise do processo de redu‡Æo da velocidade angular do sat‚lite coleta de dados, durante a fase de p¢s-inje‡Æo em ¢rbita, bem como a an lise do amortecimento do movimento oscilat¢rio na fase de captura por gradiente a gravidade. A dissipa‡Æo de energia proporcionada pela histerese resultante da itera‡Æo de barras de ferromagn‚ticas com o campo magn‚tico terrestre. Apresenta-se uma formula‡Æo simplificada que permite avaliar, com alguma precisÆo, os tempos necess rios para a redu‡Æo da rota‡Æo e amortecimento das oscila‡äes. Adota-se uma configura‡Æo para o posicionamento das barras e estudam-se poss¡veis intera‡äes com outras subsistemas, bem como os tempos envolvidos no caso de falha na libera‡Æo do ioi“. Faz-se tamb‚m um primeiro dimensionamento nas barras e indicam-se suas principais caracter¡sticas. MFN: 4760 1: SID/SCD 2: 2837 3: INPE-2837 4: ETES 5: MP 6: m 16: SANTANA,C.E. 16: SANTOS,C.D. 16: GEIER VILA,I.O. 16: SURENDRA,K. 16: ALMEIDA,H.P.S. 18: CONVERSOR DE 131,7MHZ PARA 10MHZ - SMS/GOES 58: ETE 59: 910406 64: <1983> 68: NTC 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: 8308 MFN: 4764 1: SID/SCD 2: 2843 3: INPE-2843-TDL/141 4: ETES 5: T 6: m 16: Medeiros, Valder de Matos 18: An lise de missäes: defini‡Æo da geometria orbital de sat‚lites artificiais 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 64: mar. <1983> 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: an lise de missäes 87: propaga‡Æo de ¢rbita 87: geometria orbital 83:  apresentada uma estrutura para o "software" de aplica, em an lise de missäes,, dando ˆnfase a modularidade e flexibilidade das rotinas para o f cil acesso do usu rio. Uma revisÆo dos m‚todos de propaga‡Æo de ¢rbitas ‚ feita introduzindo nos procedimentos de propaga‡Æo semi-anal¡tica um recurso que amplia a versatilidade desse m‚todo em an lise de missäes. o primeiro sat‚lite da MissÆo Espacial Completa Brasileira (MECB)‚ tomado como exemplo de aplica‡Æo do "software" e procedimentos descritos MFN: 4766 1: SID/SCD 2: 2845 3: INPE-2845-TDL/142 4: ETES 5: T 6: m 16: Borges, Paulo Donato Allemand 18: An lise dinƒmica da trajet¢ria e da atitude de um veiculo espacial na fase de inje‡Æo 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: abr. <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: dinƒmica de trajet¢ria e atitude 87: inje‡Æo em ¢rbita ioi“ 87: amortecimento magn‚tico 83: Esta disserta‡Æo versa sobre a modelagem e an lise, com hip¢tese de corpo r¡gido, da dinƒmica de trajet¢ria e atitude de um sat‚lite e motor-foguete do £ltimo est gio de um ve¡culo lan‡ador, a propelente s¢lido, na fase de inje‡Æo em ¢rbita. Um algoritmo num‚rico baseado nos modelos acima ‚ proposto com o objetivo de minimizar os erros de entrada (ou inje‡Æo)na ¢rbita pretendida, tomando curvas execut veis para o empuxo e debito de massa do motor do £ltimo est gio. Tolerƒncias de constru‡Æo do ve¡culo sÆo discutidas a medida que afetem o recobrimento de uma dada  rea (inclina‡Æo da ¢rbita)pelo sat‚lite e seu tempo de vida (excentricidade e semi-eixo maior). Apresenta-se tamb‚m o projeto de um sistema ioi“ cl ssico para a remo‡Æo das velocidades angulares residuais, päs-inje‡Æo, do ve¡culo em torno de seu centro de massa, bem como uma pr‚via discussÆo sobre o instante ¢timo de disparo para tal dispositivo. MFN: 4767 1: SID/SCD 2: 2846 3: INPE-2846-PRE/388 4: ETES 5: MC 6: am 10: ANDRADE,R.S. 12: Dinƒmica de sistemas: avan‡os t‚cnicos recentes e projetos em cursos 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35. 54: 6-13 jul. <1983> 56: Bel‚m 57: BR 58: DMC 59: 881015 61: 64: <1983> 68: PRE 83: Divulga‡Æo cient¡fica do m‚todo de dinƒmica de sistemas, com sugestÆo para sua aplica‡Æo na compreensÆo de certos problemas macro-s¢cio-econ“micos nacionais MFN: 4768 1: SID/SCD 2: 2847 3: INPE-2847 4: COMP 5: MC 6: am 10: CHARPENTIER,D.J. 10: SILVA,O.O. 12: UM SISTEMA DE COMPRESSAO DE DADOS 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 6., SAO JOSE DOS CAMPOS, 26-30 SET. 1983 54: 26-30 set. <1983> 56: SÆo jos‚ dos Campos 58: LAC 59: 12091X 61: 64: <1983> 68: PRE 91: 8309 MFN: 4770 1: SID/SCD 2: 2850 3: INPE-2850 4: CEA 5: MC 6: am 7: 000 10: Schaal, Ricardo Enersto 10: GEORGES,C.B. 12: DETERMINACAO DA ATENUACAO DE MICROONDAS PELA INFLUENCIA DOS GASES ATMOSFERICOS, ATRAVES DE TECNICA RADIOMETRICA 53: SIMPOSIO BRASILEIRO DE MICROELETRONICA, 3 54: 25-27 jul. <1983> 56: SÆo Paulo 58: DAS 59: 90130X 64: <1983> 68: PRE 76: RADIOASTRONOMIA 91: 8307 MFN: 4773 1: SID/SCD 2: 2856 3: INPE-2856 4: MET 5: S 6: as 7: [07] 10: Tavares, M.F.M. 10: Vieira, B.M. 10: Moreira-Nordemann, Lycia Maria 12: Analise quimica de ions em aguas de chuva de regioes naturais. Correlacoes com aerossois atmosfericos 14: 351-376 20: 26 30: Revista Brasileira de Geofisica 31: 3 32: 1 40: Pt 41: Pt 42: 53: Simposio de Hidrologia e Recursos Hidricos, 5 54: 13-18 nov. <1983> 56: Blumenau 57: BR 58: DCM 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 83: O conhecimento da composicao quimica qualitativa e quantitativa, tanto do particulado em suspensao na atmosfera como das aguas pluviais, de uma dada regiao, tem possibilitado o estabelecimento de correlacoes interessantes do ponto de vista de qualidade ambiental, como tambem no que se refere ao entendimento da formacao, transformacao e movimentacao de material na natureza. Particulamente no Brasil, poucos sao os estudos ate entao realizados, em confronto com alguns paises europeus e Estados Unidos, em que estudos desse tipo vem sendo realizados de modo sistematico, ha mais de 15 anos. No presente trabalho, amostras de agua de chuva e aerossois atmosfericos foram coletadas sistematicamente, ha 2 anos (junho 81/julho 83)em 3 estacoes situadas na regiao leste do estado de Sao Paulo, a saber: Ubatuba (litoral norte), Sao Jose dos Campos (Vale do Paraiba)e Campos do Jordao (Serra da Mantiqueira). A analise de alguns ions de interesse em estudos de composicao quimica da atmosfera, tais como, Na , Mg , Ca , K e Cl , foi efetuada tanto nos extratos aquosos do material particulado como nas amostras de agua de chuva. A concentracao dos cations foi determinada por espectrometria de absorcao atomica e o anion Cl , foi determinado potenciometricamente, utilizando-se em eletrodo ion seletivo. Dados meteorologicos de precipitacao media mensal, para os 3 locais de coleta, no intervalo aproximado de 10 anos, demonstram correlacao nitida entre os periodos de estiagem e de pluviometria intensa. Os resultados experimentais obtidos para as 3 regioes indicam que pluviometria e a concentracao dos diversos ions analisados nas amostras de agua de chuva, se correlacionam inversamente. Os resultados obtidos permitem calcular a contribuicao da agua da chuva em ions e, no caso de Ubatuba e Campos do Jordao, estabelecer padroes destas contribuicoes para regioes naturais. E nitido o decrescimento da concentracao de Na , Mg e Cl com o afastamento em relacao a costa maritima, o que confirma a origem essencialmente marinha desses 91: FDB-19950419 92: FDB-MLR MFN: 4774 1: SID/SCD 2: 2857 3: INPE-2857 4: MET 5: S 6: as 7: [07] 10: Moreira-Nordemann, Lycia Maria 10: Bertoli, J.L.R. 10: Cunha, R.C.A. 10: Palombo, C.R. 12: Analise quimica preliminar das aguas de chuvas de Cubatao: impactos ambientais 14: 339-350 30: Revista Brasileira de Engenharia 31: 3: 40: Pt 41: Pt 42: 53: Simposio de Hidrologia e Recursos Hidricos, 5 54: 13-18 nov. <1983> 56: Blumenau 58: DCM 61: 64: nov. <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19950419 92: FDB-MLR MFN: 4775 1: SID/SCD 2: 2859 3: INPE-2859 4: ETES 5: MP 6: m 16: Cruz, Marcos Antonio Cardoso 18: FONTE CHAVEADA TIPO "PUSH-PULL" 42: 58: DSS 59: 12091X 62: INPE 64: <1983> 68: RTR 91: 8308 MFN: 4777 1: SID/SCD 2: 2861 3: INPE-2861 4: COMP 5: MP 6: m 16: BITRAN,G.R. 16: Yanasse, Horacio Hideki 18: DETERMINISTIC APPROXIMATION TO STOCHASTIC PRODUCTION PROBLEMS 58: lac 59: 12091X 64: <1983> 68: RPQ 76: COMPUTACAO APLICADA 91: 8309 MFN: 4779 1: SID/SCD 2: 2865 3: INPE-2865-PRE/400 4: ETES 5: MC 6: am 10: Lopes, Roberto Vieira da Fonseca 10: Carrara, Valdemir 10: Kuga, H‚lio Koiti 10: Medeiros, Valder de Matos 12: Calculo recursivo do vetor campo geomagn‚tico 13: Recursive analysis of the geomagnetic vector field 53: ReuniÆo Anual da Sociedade Brasileira para o Progresso da Ciˆncia (SBPC), 35 54: 6-13 jul. <1983> 56: Belem 58: DMC 59: ORBAT 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 76: COMPUTER PROGRAMMING AND SOFTWARE 87: campo geomagn‚tico 87: fun‡äes associadas de legendre 87: c lculo recursivo 88: Geomagnetism 88: recursive functions 88: vector spaces 88: algorithms artificial satellites 88: computer programs 88: legendre functions 88: numerical analysis 83: A computer program to evaluate the geomagnetic field components in geographic reference systems by using the Gauss model of order and degree 10 and with the International Geomagnetic Reference Field Coefficients 1980 is presented. The algorithm is recursive and normalized formulas and constants are used for the sake of rapidity and precision. The geomagnetic field evaluation is useful in artificial satellites dynamics and in attitude sensor measurements simulation. Illustrative numerical results are presented MFN: 4783 1: SID/SCD 2: 2873 3: INPE-2873 4: COMP 5: MC 6: am 10: MASCARENHAS,N.D.A. 12: PROCESSAMENTO DIGITAL DE IMAGENS 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 6 54: 26-30 set. <1983> 56: SÆo Jos‚ Campos 58: LAC 59: 12091X 61: NC 68: PRE 91: 8309 MFN: 4784 1: SID/SCD 2: 2877 3: INPE-2877-PRE/403 4: ETES 5: MC 6: am 10: MARTINS,E. 10: Mattiello-Francisco, Maria de F tima 10: PRATTI,C.S.C. 12: NUCLEO PORTATIL PARA COMPUTADORES 13: Portable kernel for computers 14: 13 53: Symp. on Basic Software Development for Microcomputers, 3 54: 5-7 set. <1983> 56: Rio de Janeiro 58: DSS 59: 39100X 61: 64: <1983> 68: PRE 76: COMPUTER PROGRAMMING AND SOFTWARE 88: CENTRAL PROCESSING UNITS 88: KERNEL FUNCTIONS 88: MICROCOMPUTERS 88: INTERRUPTION 88: MULTIPROGRAMMING 88: PORTABLE EQUIPMENT 88: RANDOM ACCESS MEMORY 83: A portable executive, NOC, for different microcomputers, devoted to process control systems is presented. Each kernel is intended to support the specific execution of the application programs, which in their turn are considered as the only users of the systems. For this, NOC supports the processes concurrence, allowing the development of a real time multiprogramming environment MFN: 4788 1: SID/SCD 2: 2888 3: INPE-2888 4: COMP 5: MC 6: am 10: TAVARES,S.A. 12: UM MODELO SIMPLIFICADO DE CAMADA LIMITE 14: 22 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 6 54: 26-30 set. <1983> 56: SÆo Jos‚ dos Campos 58: LAC 59: 12091X 61: 68: PRE 91: 8210 MFN: 4789 1: SID/SCD 2: 2889 3: INPE-2889-tdl/145 4: ETES 5: T 6: m 16: Ferreira, Luiz Danilo Damasceno 18: Controle de sat‚lites por aletas estabilizadoras 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: ago. <1983> 66: SÆo Jos‚ dos Campos 67: BR 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle adaptativo 87: atitude de sat‚lites 87: arrasto aerodinƒmico 87: estabiliza‡Æo de sat‚lites 87: modelagem e an lise da atitude 87: sat‚lites de baixa altura 83: Apresentam-se as fases de modelagem e an lise do desenvolvimento de um sistema de controle de atitude de sat‚lites artificias de baixa altura, mediante o uso de aletas estabilizadoras. A fun‡Æo do sistema ‚ manter o sat‚lite orientado segundo a vertical local. Para isto, o sistema de controle aproveita a for‡a aerodinƒmica que, incidindo sobre as aletas, cria um torque restaurados de modo alinhar novamente o sat‚lite com a vertical local. As for‡as aerodinƒmicas sobre o sat‚lite sÆo modeladas supondo fluxo molecular livre, usando a Teoria Cin‚tica dos Gases. O desenvolvimento do sistema de controle ‚ tratado atrav‚s da aplica‡Æo de conceitos de controle estoc stico. O movimento do sat‚lite ‚ descrito atrav‚s das equa‡äes do movimento obtidas pelo formalismo newtoniano. A partir do Principio da Separa‡Æo desenvolve-se um procedimento seqencial em que os problemas de estima‡Æo de estado e de controle sÆo tratado simultaneamente. A estima‡Æo de estados ‚ realizada atrav‚s da t‚cnica do filtro de Kalman que opera sobre as informa‡äes das posi‡äes do sat‚lite e das aletas. O controlador atua sobre o sat‚lite em tempo real, sendo as aletas os £nicos elementos de controle MFN: 4794 1: SID/SCD 2: 2902 3: INPE-2902 4: ETES 5: MP 6: m 16: KOSHIMA,S. 16: BUENO,L.A.R 16: CHRISPIN,R. 18: INTERFACE DO SISTEMA DE SUPERVISAO DA ESTACAO TERRENA DA MECB 58: ETE 59: 351202 64: <1983> 68: NTC 87: MissÆo Espacial Completa Brasileira 91: 8310 MFN: 4796 1: SID/SCD 2: 2906 3: INPE-2906 4: CEA 5: T 6: m 7: 000 16: Correia, Emilia 18: CONDICOES DE CONTORNO PARA O FENOMENO DAS EXPLOSOES SOLARES ESTABELECIDAS A PARTIR DO COMPORTAMENTO ESTATISTICO NA FAIXA DE RAIOS X DUROS 50: Instituto de Pesquisas Espaciais 51: Mestre 58: CRAAE 59: 88202X 64: <1983> 68: TDI 76: RADIOASTRONOMIA 91: 8310 MFN: 4797 1: SID/SCD 2: 2909 3: INPE-2990-TDL/148 4: ETES 5: T 6: m 16: Orlando, Valcir 18: T‚cnicas estoc sticas aplicadas … suaviza‡Æo tratamento de tendenciosidades e compressÆo de dados rastreamento ou telemetria de sat‚lites artificiais 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: ago. <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA DE TECNOLOGIA ESPACIAL 87: pre-processamento 87: suaviza‡Æo de dados 87: controle estoc sticas 87: filtro de Kalman 87: estima‡Æo de estado 87: comprenssÆo de dados 83: SÆo apresentados trˆs procedimentos relacionados com a fase de pr‚-processamento de dados de rastreamento e telemetria de sat‚lites artificiais, desenvolvidos com o aux¡lio de t‚cnicas estoc sticas. O primeiro deles ‚ um procedimento de suaviza‡Æo de dados, por ajuste de curvas, desenvolvido atrav‚s da aplica‡Æo do filtro de Kalman combinado com t‚cnicas adaptativas de dosagem do ru¡do no estado. O segundo procedimento, desenvolvido de mofo a permirtir um tratamento autom tico de tendendiosidade existentes em dados de observa‡Æo do estado de sistemas dinƒmicos, torna poss¡vel o emprego direto de observa‡äes afetadas por erros tendenciosos em estima‡Æo de estado via filtro de kalman. Para isso ‚ utilizado um esquema de compensa‡Æo dinƒmica. Finalmente, o terceiro procedimento, classificado como procedimento de compressÆo de dados, tem o objetivo de obter, dentro de certas condi‡äes, um ganho em termos de velocidade de processamento na aplica‡Æo do filtro de Kalman … estima‡Æo de estado de sistemas dinƒmicos nÆo-lineares. Testes de valida‡Æo dos procedimentos foram feitos por simula‡äes via computador digital usando dados relacionados … ¢rbita de u sat‚lite artificial de baixa altitude. MFN: 4799 1: SID/SCD 2: 2913 3: INPE-2913 4: CEA 5: T 6: m 16: Botti, Luiz Claudio Lima 18: ESTUDO DE VARIABILIDADES DE RADIOFONTES EXTRAGALATICAS EM 22 E 44GHZ 50: Instituto de Pesquisas Espaciais 51: Mestre 58: CRAAE 59: 88202X 64: maio <1983> 68: TDI 76: RADIOASTRONOMIA 91: 8310 MFN: 4801 1: SID/SCD 2: 2916 3: INPE-2916-PRE/428 4: ETES 5: MC 6: am 10: Pereira, Samuel Alves 10: D'Ippolito, Eliane 10: Seehusen, Hans Jurgen 12: µrvores bin rias com endere‡os ordenados: uma t‚cnica para otimiza‡Æo de acesso para arvores bin rias em disco 53: SEMISH - SEMINARIO INTEGRADO DE HARDWARE E SOFTWARE, 10 54: 25-29 jul. <1983> 56: Campinas 58: DMC 59: TEREAL 61: 64: <1983> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87:  rvore bin ria 87: n£mero m‚dio de acesso 87: otimiza‡Æo 83: µrvores bin rias sÆo bons m‚todos para organiza‡Æo de arquivos dinƒmicos. Se uma  rvore uma  rvore bin ria for armazenada numa mem¢ria de acesso pseudo-aleat¢rio com disco, pode-se usar a t‚cnica de µrvores Bin rias com Endere‡os Ordenados (ABEO)para diminuir o n£mero m‚dio de acesso e transferˆncias. SÆo apresentados os algoritmos de inser‡Æo e elimina‡Æo para manipula‡äes de ABEO. Os resultados, obtidos por simula‡Æo, mostram que o n£mero m‚dio de acessos a uma ABEO em disco pode ser reduzido at‚ a metade em rela‡Æo a  rvores bin rias comuns. Para manter o balanceamento, foi usada a t‚cnica de  rvores virtuais. MFN: 4824 1: SID/SCD 2: 2943 3: INPE-2943 4: ETES 5: MP 6: m 16: Carleial, Aydano Barreto 18: REQUISITOS DE SISTEMA PARA ESTACAO TERRENA SCPC FM DE BAIXA CAPACIDADE 58: DSS 59: 331015 64: <1983> 68: NTC MFN: 4825 1: SID/SCD 2: 2944 3: INPE-2944 4: ETES 5: PM 6: m 16: Carleial, Aydano Barreto 16: Kono, Janio 16: RODRIGUES,J.A. 16: ARAKAKI,Y. 16: COLLA,N.H. 18: ESPECIFICACOES DE ESTACAO TERRENA SCPC FM DE BAIXA CAPACIDADE 58: DSS 59: 331015 64: <1983> 68: NTC MFN: 4826 1: SID/SCD 2: 2947 3: INPE-2947 4: ETES 5: MP 6: m 16: Carleial, Aydano Barreto 18: CALCULO DOS ENLACES SCPC ENTRE ESTACOES TERRENAS DA REDE DAS FORCAS ARMADAS, ATRAVES DO SATELITE DOMESTICO SBTS 58: DSS 59: 331015 64: <1983> 68: NTC MFN: 4846 1: SID/SCD 2: 2980 3: INPE-2980 4: COMP 5: MC 6: am 10: BITTENCOURT,G. 10: DIAS,L.A.V. 12: SOLUCAO ANALITICA POR COMPUTADOR DE EQUACOES DIFERENCIAIS ORDINARIAS DE PRIMEIRA E SEGUNDA ORDENS UTILIZANDO O METODO DE DESENVOLVIMENTO EM SERIES 53: CONGRESSO NACIONAL DE MATEMATICA APLICADA E COMPUTACIONAL, 6 54: 26-30 set. <1983> 56: SÆo Jos‚ dos Campos 58: LAC 59: 708003 61: 64: <1983> 68: PRE 91: 8309 MFN: 4851 1: sid/scd 2: 2985 3: INPE-2985 4: CEA 5: MP 6: m 7: 000 16: Abraham, Zulema 16: Vilas Boas, Jos‚ Williams dos Santos 16: DEL CIAMPO,L.F. 16: CANCORO,A.C.O. 18: THE OCTOBER 1983 RECURRENCE OF THE OUTBURST OF THE ORION WATER SOURCE AND ITS PAST HISTORY 20: 000 58: DAS 59: RADIO 64: <1983> 68: RPQ 76: RADIOASTRONOMIA 91: 8312 MFN: 4852 1: SID/SCD 2: 2987 3: INPE-2987-TDL/152 4: ETES 5: T 6: M 16: Ceballos, D‚cio Castilho 18: Controlador com t‚cnica de compensa‡Æo baseada em um esquema de controle ativo sobre o efeito acumulado do desvio da modelagem 20: 92 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: ago. <1983> 66: SÆo jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: controle adaptativo 87: controle de atitude 87: compensa‡Æo de erro 87: modelo de referˆncia 87: sat‚lites com apˆndice flex¡veis 83: O desenvolvimento de t‚cnicas que resistam a infidelidade de modelagem ‚ um dos problemas mais importantes da teoria de controle de sistemas por realimenta‡Æo. As restri‡äes na fidelidade da modelagem estÆo sempre presentes por um ou mais dos seguintes motivos: desconhecimento da f¡sica do problema; excessiva complexidade para o desenvolvimento de um esquema de controle; restri‡äes nos recursos computacionais; e esquemas que envolvem controle descentralizado. As t‚cnicas desenvolvidas normalmente atuam sobre o fen“meno de divergˆncia do filtro de estima‡Æo de estado. Existe uma lacuna de t‚cnicas que atuam no filtro e no controlador no sentido de compensar globalmente infidelidade de modelagem. O procedimento proposto ‚ uma contribui‡Æo para resolver esta lacuna. A id‚ia b sica ‚ anular o efeito acumulado de desvio de modelagem atrav‚s do controle, de modo a induzir o sistema f¡sico a se compoortar como o modelo de trabalho utilizado na s¡ntese e implementa‡Æo do controle. O efeito acumulado de desvio de modelagem ‚ avaliado utilizando o conceito de divergˆncia de filtros de estima‡Æo de estado. Aplicou-se, com resultados satisfat¢rios, o procedimento para controle em um eixo da atitude de um sat‚lite linear dinƒmico, invariante no tempo, de d‚cima quarta ordem. Dois que correspondente apenas ao movimento de corpo r¡gido MFN: 4856 1: SID/SCD 2: 3003 3: INPE-3003-TDL/154 4: ETES 5: T 6: m 16: Pilchowski, Hans-Ulrich 18: Estudo da solu‡Æo num‚rica de alguns problemas de difusÆo, usando o m‚todo de elementos finitos 20: 156 50: Instituto de Pesquisas Espaciais 51: Doutor 58: DMC 59: CMC 62: INPE 64: set. <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHAIA E TECNOLOGIA ESPACIAL 88: equa‡äes diferenciai 88: parab¢licas 88: problemas de difusÆo 88: elementos finitos 83: Desenvolve-se um m‚todo num‚rico para resolver problemas difusÆo, em particular da classe dos problemas de campo em regime transit¢rio, utilizando a t‚cnica de elementos finitos. 0 m‚todo ‚ desenvolvida considerando o tempo como vari vel de mesma esp‚cie que as vari veis espaciais e utiliza elementos triangulares no plano (x, t), isto ‚, elementos espa‡o-tempo. 0 problema nÆo ‚ tratado por separa‡Æo de vari veis de espa‡o e de tempo, pois deste modo nÆo h  contribui‡Æo cruzada ao longo da malha espa‡o-tempo. O m‚todo viabiliza a constru‡Æo de programas computacionais, onde as condi‡äes inicial e de contorno sÆo fornecidas como dados, o que torna vi vel estudos de otimiza‡Æo de projetos, onde outros m‚todos (diferen‡as finitas)sÆo invi veis por ser-se obrigado a construir um novo programa para cada caso novo de condi‡Æo de contorno MFN: 4873 1: SID/SCD 2: 3034 3: INPE-3034-PRE/468 4: ETES 5: MC 6: am 10: LOpes, Roberto Vieira da Fonseca 12: Suaviza‡Æo de dado: um algoritmo autom tico 20: 21 53: Congresso Nacional de Matematica Aplicada e Computacional. 6 54: 26-30 SET. <1983> 56: SÆo Jos‚ dos Campos 58: DMC 59: TEREAL 61: 64: <1983> 68: PRE 76: ENGENHAIA E TECNOLOGIA ESPACIAL 87: suaviza‡Æo 87: processamento de dados 87: interpola‡Æo 87: spline 83: Neste trabalho sÆo apresentados alguns m‚todos de suaviza‡Æo utiliz veis, entre outras aplica‡äes, em pre-processamento de dados com ru¡dos. Em particular, sÆo equacionados os m‚todos de diferen‡as e de derivadas segundas. Em seguida, ‚ proposto um crit‚rio de escolha do grau de suaviza‡Æo utilizado na implementa‡Æo destes m‚todos. EntÆo ‚ desenvolvido um procedimento autom tico para o c lculo do referido para metro, baseado numa modelagem estat¡stica do ru¡do nos dados. o desempenho pode ser verificado nos resultados obtidos em testes efetuados por simula‡Æo em computador digital, os quais sÆo apresentados e discutidos MFN: 4902 1: SID/SCD 2: 3072 3: INPE-3072-TDL/160 4: ETES 5: T 6: m 16: AbrÆo, Ronaldo Bologna 18: Ante-Projeto de t£nel aerodinƒmico de baixa densidade 20: 173 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: dez. <1983> 66: SÆo Jos‚ dos Campos 68: TDI 76: ENGENHARIA E TECNOLOGIA ESPACIAL 87: escoamento de baixa densidade 87: tunel do vento de baixa densidade 87: bocais de baixa densidade 83: O conhecimento preciso das for‡as perturbadoras e dos torques sobre sat‚lites artificiais ‚ de grande importƒncia para a determina‡Æo da ¢rbita, posi‡Æo e atitude desses sat‚lites. Entre essas perturba‡äes as for‡as e torques aerodinƒmicos representam um papel de desta que para sat‚lites que orbitam at‚ uma altitude de 1000 km. Outros efeitos aerodinƒmicos, produzidos por fontes a bordo dos sat‚lites, tamb‚m tˆm influˆncia sobre a opera‡Æo desses ve¡culos, independentemente da altitude. A parte da mecƒnica dos flu¡dos que trata do escoamento de gases rarefeitos pode ser estudada te¢rica e experimentalmente atrav‚s de sobre sat‚lites em ¢rbita ou utilizando facilidades experimentais capazes de simular os fen“menos aerodinƒmicos sobre corpos e-m atmosfera rarefeita. O objetivo deste trabalho ‚ apresentar um estudo b sico para o projeto de um t£nel aerodinƒmico de baixa densidade. Os diversos componentes do t£nel sÆo descritos e os principais parƒmetros de projeto, analisados. Uma an lise mais detalhada do escoamento em um bocal ‚ realizada com a finalidade de dimensionar bocais supers“nicos adequados para a simula‡Æo de escoamentos de gases rarefeitos. · instrumenta‡Æo do t£nel, as principais dificuldades envolvidas na investiga‡Æo te¢rica e experimental da aerodinƒmicos de sat‚lites e outros aspectos de interesse sÆo apresentados 91: 8404 MFN: 4921 1: SID/SCD 2: 3104 3: INPE-3104 4: ETES 5: S 6: as 7: 000 10: RANVAUD,R. 10: SCHMIDT-KOENIG,K. 10: KIEPENHEUR,J. 10: GASPAROTO,O.C. 12: THE INITIAL ORIENTATION OF HOMING PIGEONS OF THE MAGNETIC EQUATOR, WITH AND WITHOUT SUN COMPASS 14: 77-79 30: BEHAV. ECOL. SOCIOBIOL (REVISED VERSION) 31: 14 32: : 58: ETE 59: 903337 61: 64: <1983> 68: PRE 91: 8405 MFN: 4941 1: SID/SCD 2: 3140 3: INPE-3140 4: ETES 5: T 6: m 16: Andrade Filho, J.P 18: Simula‡Æo de um sistema de suprimentos de energia de um sat‚lite 50: Instituto de Pesquisas Espaciais 51: Mestre 58: DMC 59: CMC 62: INPE 64: dez. <1983> 68: TDI MFN: 5183 1: SID/SCD 2: 3561 3: INPE-3561 4: COMB 5: MP 6: m 16: Anhalt, J. 18: PYRANOMETER COMPARISON AT INPE, ATIBAIA, IN AUGUST 1983 20: 13 58: LCP 59: 20112X 62: INPE 64: <1983> 68: NTC 76: COMBUSTAO 91: 8506 MFN: 5700 1: SID 2: 4394 3: INPE-4394-PRE/ 4: FISPLASMA 5: S 6: as 10: Chian, Abraham Chian Long 10: KENNEL,C.F. 12: SELF-MODULATIONAL FORMATION OF PULSAR MICROSTRUCTURES 14: 9-18 30: Astrophysics Space Science 31: 97 32: 1 40: En 41: En 42: 58: LAP 59: 601101 61: 64: <1983> 68: PRE 76: FÖSICA DE PLASMA 83: We discuss a nonlinear plasma theory for self-modulation of pulsar radio pulses. A nonlinear Schr”dinger equation is derived for strong electromagnetic waves propagating in an electron-positron plasma. The nolinearities arising from wave intensity induced particle mass variation may excite the modulational instability of circularly and linearly polarized pulsar radiation. The resulting wave envelopes can take the form of periodic wave trains or solitons. These nonlinear stationary waveforms may account for the formation of pulsar microstructures 91: 8309 MFN: 6369 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Nobre, Carlos Afonso 12: Tropical heat sources and their associated large-scale atmospheric circulation 14: 104-107 18: Anais 40: En 41: En 42: 53: First Conference on Southern Hemisphere Meteorology 54: <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-19930601 92: FDB-MD 101: D MFN: 6392 1: SID/SCD 4: MET 5: MC 6: am 7: [07] 10: Cavalcanti, Iracema Fonseca Albuquerque 10: Gan, Manoel Alonso 12: Local phenomena 40: En 41: En 42: 53: WMO-RA III/IV Course on the Management and Application of Meteorological Satellite Data 54: Nov. <1983> 56: Sao Jose dos Campos 57: SP 58: CPT 61: 64: <1983> 68: PRE 90: b 76: METEOROLOGIA 91: FDB-1930112 92: FDB-MLR 101: D MFN: 9317 1: SID/SCD 2: 8326 3: INPE-8326-PRE/4109 4: CEA 5: S 6: as 7: [07] 10: Sahai, Yogeshwar 10: Bittencourt, Jos‚ Augusto 10: Teixeira, Nelson Rodrigues 10: Takahashi, Hisao 12: Observations of large scale F-region irregularities using airglow emission at 7774 A and 6300 A 14: 271-276 30: Annales Geophysicae 31: 1 32: 3 40: En 41: En 42: 58: DAE 58: DGE 61: 64: <1983> 68: PRE 90: b 76: AERONOMIA 87: ionosfera 87: luminescˆncia atmosf‚rica 88: F-region (flayer) 88: nightglow 88: ionospheric 88: plasma depleted 83: Simultaneous scanning measurements of the atomic oxygen 7774 A and 6300 A emissions, to study the dynamics of low-latitude large scale F-region irregularities, were carried out at Cachoeira Paulista (geographic coordinates 22.7§ S, 45.0§ W; geomagnetic latitude 11.95§ S), Brazil, during the period October-November, 1980. The measurements were made with a two-channel photometer which permitted scanning observations both along and across the magnetic meridian. Observations at 7774 A can detect large scale irregularities near the F-region peak height, whereas observations at 6300 A detect such irregularities at an altitude about 50 km to 100 km lower, depending on the F-region height. On many nights. during spread-F conditions, as indicated by an ionosonde operating at the same location, the presence of large intensity depletions of short duration were detected in both emissions. These depletions were observed to move towards the east in the east-west scans, and apparently towards the south in the north-south scans. Salient features of these observations are presented and discussed 91: FDB-20010724 92: FDB-MLR MFN: 9453 1: SID/SCD 2: 8429 3: INPE-8429-PRE/4201 4: CEA 5: S 6: as 7: [07] 10: Abdu, Mangalathyil Ali 10: Medeiros, Rui Tertuliano 10: Bittencourt, Jos‚ Augusto 10: Batista, Inez Staciarini 12: Vertical ionization drift velocities and range type spread f in the evening equatorial ionosphere 14: 399-402 30: Journal of Geophysical Research 31: 88 32: A1 40: En 41: En 42: 58: DAE 61: 64: Jan.. <1983> 68: PRE 90: b 76: AERONOMIA 87: propaga‡Æo F 87: ionogramas 87: equador magn‚tico 88: spreed F 88: ionograms 88: magnetic equator 83: Range type spread F indices in the post sunset hours, determined from ionograms, are compared with F layer vertical velocities, also deduced from ionograms, for a period of one year, over the magnetic equatorial station Fortaleza (geographic coordinates: 4 degree S, 38 degree W; dip latitude: 1.8 degree S), Brazil. Besides good correlation between the two parameters, the results suggest the presence of a certain threshold value for the vertical ionization velocity and a corresponding threshold height for the base of the evening F layer,- as one of the necessary conditions for the occurrence of spread F irregularities valid for southern solstice (summer)and equinoctial months. The nature of the possible variabilities in the amplitude of the initial perturbation in the ionization (seeding mechanism), which is another prerequisite for the generation of irregularities, is discussed briefly 91: FDB-20011107 92: FDB-MLR MFN: 9678 1: SID/SCD 2: 8736 3: INPE-8736-PRE/4469 4: CEA 5: S 6: as 7: [07] 10: Abdu, Mangalathyil Ali 10: Bittencourt, Jos‚ Augusto 10: Batista, Inez Staciarini 12: Longitudinal differences in the spread F characteristics 14: 647-663 30: Revista Brasileira de F¡sica 31: 13 32: 4 40: En 41: En 42: 58: DAE 61: 64: <1983> 68: PRE 76: AERONOMIA 87: caracter¡sticas 87: equador magn‚tico 87: diferen‡as 87: propaga‡Æo F 87: irregularidades 87: ionosferas 88: spread F 88: characteristics 88: magnetic equador 88: differences 88: ionospheres 88: irregularities 88: ionospheres 83: A comparative study is carried out of the spread F occurrence rates at Fortaleza (40§S, 38§W)and Huancayo (12 §S, 75§ W), two stations located along the magnetic equator in the American zone. While there are similarities in the gross features of the range type spread F occurrences, profound differences, on a seasonal basis, are present in the case of the frequency type spread F at the two stations. Profound dissimilarities are observed also in the evening enhancement in the F -region vertical drift velocity (Vz ) measured over Jicamarca (and the F-region height changes observed over Huancayo), with respect to that observed over Fortaleza, in that the seasonal trends in the local times of prereversal V z peak occurrences are in exactly opposite sense at the two stations. An attempt is made to interpret these results in terms of the differences in the magnetic field declinations at the two stations that cause significant differences in the conjugate E- region sunset durations and, hence, in differing rates of F-region polarization electric field developments at these stations. Influence of the F-region dynamo on the gross features of the prereversal Vz peak and spread F characteristics seems to be born out in the present results 91: FDB-20020326 92: FDB-MLR MFN: 10993 1: SID/SCD 4: ETES 5: MC 6: am 10: Perondi, Leonel Fernando 12: String design optimization of solar panels 38: (IAF Paper 88-212) 40: En 41: En 42: 53: Congress of the International Astronuatical Federation, 39 (IAF) 54: 8-15 Oct. <1983> 56: Bangalore 57: India 58: LAS 61: 64: <1988> 68: PRE 76: ENGENHARIA E TECNOLOGIA ESPACIAL 91: 8406 MFN: 11032 1: SID/SCD 4: ETES 5: MC 6: am 10: Medeiros, Valder de Matos 10: Paiva, Ricardo Negreiro 10: Carrara, Valdemir 12: A simple Procedure for landsat-D assisted tracking 53: IFAC Workshop, Simulation and Validation Techniques to Establish Specraft Control System Perfance 54: <1983> 58: DMC 61: 64: <1983> 68: PRE 83: This paper presents a procedure used in the development of a computer program for the satellite LANDSAT-D computer controlled tracking. The program was developed and implemented for the Scientific Atlanta pedestal model 3316.During artificial satellite tracking in the auto-track mode there way occur a satellite signal loss due to zenithal passes or due to signal synchronization problems. Thus, in order to maintain a constant tracking of the satellite in the assisted mode, the control computer must have the satellite trajectory coordinates (AZ, EL), for each instant of the pass, to uommand the antenna pointing in real time. The main requirement to accomplish the task is the processing time or speed to obtain a new po-,ition for the antenna. This speedis dependent on the computer (hardware)and on the prediction program (software), that must be simple, suitable and adequate for minicomputers andat the same time precise. Also, the restrictions on the pedestal velocities in azimuth and elevation must be taken into account.Orbit propagation with traditionally known methods numerical and analytical - is expensive and doesn't have the desired ease of implementation and versatility. So a simple procedure,based on sunsynchronous orbital geometry considerations and the initial antenna readouts (AZ, EL, TIME), that can generate in real time the satellite trajectory with respect to the earth station, using the antenna.control computer, is proposed.The simplifying assumptions are madeonstable parameters of the orbit, whose variations, within two or three days, do not affect the precisions involved. Thus, the semi-major axis (a), excentricity (e)and inclination (i)are taken constants within this period. Considering a circular orbit (e= 0), the perigee argument ( ) way be taken arbitrarily null, leaving the mean anomaly equal to the true anomaly (M = f).Given the values of the semi-major axis and inclination, only the node right ascention (ohm)and mean anomaly (M)must be found, using the initial values of azimuth and elevation, to propagate the satellite's future positions. The six Keplerian elements (a, e = 0, i, = 0, ohm and M)at a given epoch, are the initial conditions for the propagation using Brouwer's mean motion equations with geopotential perturbations up to J 2.This procedure has been coded in FORTRAN-IV and implemented in the control computer (PDP 11/34)of the 10 m antenna, instal led in Cuiaba (MT, Brasil), with the Scientific Atlanta pedestal model 3316. Many validation tests were made to assure reliable and good performance of the program. The satellite trajectory is sistematically updated, at adequate intervals, to minimize the effects of the real excentricity of the orbit (This paper presents a procedure used in the development of a computer program for the satellite LANDSAT-D computer controlled tracking. The program was developed and implemented for the Scientific Atlanta pedestal model 3316.During artificial satellite tracking in the auto-track mode there way occur a satellite signal loss due to zenithal passes or due to signal synchronization problems. Thus, in order to maintain a constant tracking of the satellite in the assisted mode, the control computer must have the satellite trajectory coordinates (AZ, EL), for each instant of the pass, to command the antenna pointing in real time. The main requirement to accomplish the task is the processing time or speed to obtain a new position for the antenna. This speed is dependent on the computer (hardware)and on the prediction program (software), that must be simple, suitable and adequate for minicomputers and at the same time precise. Also, the restrictions on the pedestal velocities in azimuth and elevation must be taken into account. Orbit propagation with traditionally known methods numerical and analytical - is expensive and doesn't have the desired ease of implementation and versatility. So a simple procedure, based on sunsynchronous orbital geometry considerations and the initial antenna readouts (AZ, EL, TIME), that can generate in real time the satellite trajectory with respect to the earth station, using the antenna control computer, is proposed. The simplifying assumptions are made on stable parameters of the orbit, whose variations, within two or three days, do not affect the precisions involved. Thus, the semi-major axis (a), excentricity (e)and inclination (i)are taken constants within this period. Considering a circular orbit (e= 0), the perigee argument ( ) way be taken arbitrarily null, leaving the mean anomaly equal to the true anomaly (M = f). Given the values of the semi-major axis and inclination, only the node right ascention (O)and mean anomaly (M)must be found, using the initial values of azimuth and elevation, to propagate the satellite's future positions. The six Keplerian elements (a, e = 0, i, = 0, ohm and M)at a given epoch, are the initial conditions for the propagation using Brouwer's mean motion equations with geopotential perturbations up to J 2.This procedure has been coded in FORTRAN-IV and implemented in the control computer (PDP 11/34)of the 10 m antenna, installed in Cuiaba (MT, Brasil), with the Scientific Atlanta pedestal model 3316. Many validation tests were made to assure reliable and good performance of the program. The satellite trajectory is sistematically updated, at adequate intervals, to minimize the effects of the real excentricity of the orbit ( ), satisfying the X-Band pointing accuracy (ñ0.1§) 91: 8707 MFN: 11033 1: SID/SCD 4: ETES 5: MC 6: am 10: Milani, Paulo Giacomo 12: A new architeture for the simulation and testing of satellite attitude and orbit control systems: hardware and sotware description 53: WORLD CONGRESS OF IFAC, 20 54: <1983> 56: Sydney 57: Australia 58: DMC 59: 500003 61: 64: <1983> 68: PRE 91: 8707 MFN: 11034 1: SID/SCD 4: ETES 5: MC 6: am 10: Gandelman, Gilberto 12: Normal mode control design for brazilian remote sensing satellite 53: WORLD CONGRESS OF IFAC, 20 54: <1983> 56: Sydney 57: Australia 58: DMC 59: 500003 61: 64: <1983> 68: PRE 91: 8707 MFN: 11035 1: SID/SCD 4: ETES 5: MC 6: am 10: Carrara, Valdemir 12: Attitude stabilization and control of the brazilian data collecting satellites 53: WORLD CONGRESS OF IFAC, 20 54: <1983> 56: Sydney 57: Australia 58: DMC 59: 500003 61: 64: <1983> 68: PRE 91: 8707