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Erschienen in:
2020 | OriginalPaper | Buchkapitel
Estimation of BeiDou Satellites Antenna Phase Center Offsets
verfasst von : Yanan Fang, Jie Li, Chong Wang, Jiasong Wang
Erschienen in: China Satellite Navigation Conference (CSNC) 2020 Proceedings: Volume II
Verlag: Springer Nature Singapore
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Abstract
Using the global distributed iGMAS and MGEX multi-GNSS observation data, the theory of satellite antenna phase center correction is studied. The Phase Center Offsets (PCOs) of BDS-II IGSO and MEO satellites are estimated with real observation data, and the impacts of PCO on the precise orbit determination and station coordinates Precise Point Positioning (PPP) are also analyzed. The results show that the estimated PCO parameters could be used to improve the accuracy of orbit overlaps. The 3-D orbit accuracy of IGSO and MEO satellites is improved by 17.7% and 24.8% respectively. Among them, the accuracy of R direction is more significantly improved by 28.8% and 46.4% respectively. In addition, with the estimated PCO parameters, the RMSE of station coordinates static PPP is reduced by 11.9% and 9.5% in the horizontal and elevation directions respectively.