%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/446AF4B
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@archivingpolicy denypublisher denyfinaldraft
%3 INVESTIGATION OF SIMPLIFIED MODELS FOR ORBIT DETERMINATION USING.pdf
%X The main goal of this work is to investigate simplified models to determine in real time the orbit of an artificial satellite, using single frequency GPS measurements. This model should be compact providing standard precision at low cost. Cowell's method has been used to propagate the orbit state vector. The modeledforces are geopotential up to 23rd order and degree of the spherical harmonic coefficients. To propagate the state covariance matrix, it has been considered a more simplified model than the one used in dynamical model. For computing the state transition matrix, it is considered only keplerian motion. To estimate an orbit in real time the extended Kalman filter has been used throughout this paper. Many tests are carried out starting from the simplest two body model and varying the contribution sources of the errors to be considered. In order to assess the results, the estimated orbitfor several cases is compared with a full reference Kalman filter, for the Topex/Poseidon satellite.
%N Special Issue
%T Investigation of simplified models for orbit determination using frequency GPS measurements
%@electronicmailaddress chiara@dem.inpe.br
%K Kalman filtering, GPS, real time orbit determination.
%@secondarytype PRE PN
%@usergroup administrator
%@usergroup jefferson
%@group DMC-INPE-MCT-BR
%@secondarykey INPE-9182-PRE/4855
%F 10067
%@issn 0100-7386
%2 sid.inpe.br/iris@1905/2005/07.30.01.32.58
%B Revista Brasileira de Ciências Mecânicas
%@versiontype publisher
%P 165-172
%4 sid.inpe.br/iris@1905/2005/07.30.01.32.44
%@documentstage not transferred
%D 1999
%V 21
%O International Symposium on Space Fligh Dynamics, 8-12 Feb., 1999, Foz do Iguaçu.
%A Chiaradia, Ana Paula Marins,
%A Kuga, Hélio Koiti,
%A Prado, Antonio Fernando Bertachini de Almeida,
%@dissemination PORTALCAPES; SCIELO.
%@area ETES