Review of GNSS precise orbit determination: status, challenges, and opportunities

doi:10.11947/j.AGCS.2022.20220173

Abstract

Abstract: Precise orbit of GNSS satellites is the foundation and prerequisite of GNSS high-precision applications, and the technology of GNSS precise orbit determination (POD) has always been the research focus and hotspot in the field of satellite navigation. This paper firstly introduces the general situation of GNSS constellation and tracking data. The key issues in the construction of the function model, dynamic model and stochastic model in GNSS POD are sorted out. The research progress of GNSS precise orbit determination with the augmentation of low earth orbit (LEO) onboard data and inter satellite link (ISL) data is concluded. Then, from the application point of view, the basic status of current GNSS precision orbit products is summarized, followed by the orbit accuracy evaluation. Finally, the challenges of GNSS precise orbit determination in the rapid solution of massive GNSS network, the data fusion of multi-level observations, the refinement of solar radiation pressure (SRP) models, and the high-precision real-time POD are discussed. The opportunities brought by the development of LEO constellation, optical clock, and laser link in GNSS POD are also prospected.

Key words: GNSS POD, attitude model, antenna phase center correction, SRP, LEO augmentation, ISL, orbit products

CLC Number:

P228

LI Xingxing, ZHANG Wei, YUAN Yongqiang, ZHANG Keke, WU Jiaqi, LOU Jiaqing, LI Jie, ZHENG Hongjie. Review of GNSS precise orbit determination: status, challenges, and opportunities[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(7): 1271-1293.

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