During the establishment and operation of the space station, rendezvous and docking needs to be carried out. The relative positioning technology based on Beidou can provide highly reliable and high-precision relative position results for the rendezvous and docking of the space station. However, the GNSS receiver is in a high-speed motion state, and the complexity of the space environment, especially the change of the ionosphere, is prone to various faults. For the positioning solution, the faults are manifested as gross pseudorange errors, carrier cycle slips, and even ambiguity. Therefore, this paper carries out a targeted technical design, performs full-cycle quality monitoring of data failures, and designs a real-time carrier phase difference algorithm to speed up the ambiguity. Finally, the simulator in the rendezvous and docking task is used to generate dual-frequency (B1I/B3I) measurement data for testing and analysis. The simulation results show that the adopted technical method has the ability to detect data anomalies and ensures that the relative positioning ambiguity of Beidou is fixed. Compared with the reference baseline value, the relative positioning accuracy of Beidou is 1.96 cm, and the average convergence time is 7.6 s, which verifies the effectiveness of the technical design and meets the requirements of high-precision and high-reliability space rendezvous and docking requirements.
Verification of Relative Positioning Technology for Space Station Rendezvous and Docking Based on Beidou
Lect. Notes Electrical Eng.
China Satellite Navigation Conference (CSNC 2022) Proceedings ; Kapitel : 15 ; 173-182
2022-05-05
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 2022
|Simulation Verification of Rendezvous and Docking
Springer Verlag | 2021
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