Design of ground-based observation simulation system for LEO satellite navigation enhanced constellation

doi:10.13474/j.cnki.11-2246.2022.0053

Abstract

Abstract: Aiming at the restriction of LEO satellite navigation enhancement research due to the lack of the observation data of LEO constellations nowadays, the ground-based observation simulation system of LEO navigation enhanced constellation is designed. Firstly, the observation model of the pseudo-range and the carrier phase are derived, then the process and architecture of the simulation system are introduced, finally the SPP and PPP are calculated respectively based on the simulated ground-based LEO observation data. The correctness of the simulation system and the accuracy of the simulated pseudo range and carrier observation data are verified. The results show that, after considering various error models, the observation data simulated by the designed system owns a higher confidence compared with the ground-based observation data when only the geometric distance is considered. The system can be used to support the LEO navigation enhanced constellation positioning research.

Key words: LEO, navigation enhancement, simulation system, RTKLIB, SPP, PPP

CLC Number:

P228

ZHOU Quan, ZHANG Yang, LI Zishen, HAN Baomin, MENG Hao, DONG Xiaosong, GUO Zhenhua. Design of ground-based observation simulation system for LEO satellite navigation enhanced constellation[J]. Bulletin of Surveying and Mapping, 2022, 0(2): 110-115.

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