Logiciel de restitution de trajectoire de satellite-application au cas de satellites d'observation |
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Authors: | M Grimard AM Mainguy |
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Institution: | Office National d''Etudes et de Recherches Aérospatiales (ONERA), 92320, Châtillon, France |
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Abstract: | This paper presents an orbit determination program based on two algorithms: Kalman filtering and Rauch smoothing. Novel adaptation of these algorithms lets obtain a posteriori statistical estimations of evolution and measurement noises and of their standard deviation. Analysis of results about these noise estimations lets regulate optimally the a priori levels of noise standard deviations and detect eventually model errors. Such use is presented for Earth observation satellites, at first with simulated data, then with real data (TIROS N satellite). |
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