Earth gravity model improvement: An alternative method for Doppler-tracked satellites |
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| Institution: | 1. School of Aeronautics and Astronautics, Sichuan University, Chengdu 610065, China;2. Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore |
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| Abstract: | A new method of Earth gravity model improvement based on an analytical formulation of Doppler residuals is presented here in prospect of future geodetic and altimetric missions (DORIS, TOPEX/POSEIDON, ERS1). After an intermediate step of orbit improvement, disturbing forces due to gravity field mismodeling are recovered above tracking stations at satellite altitude. Some significant simulation results for SEASAT and DORIS are presented. |
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