Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (9): 6-11,58.doi: 10.13474/j.cnki.11-2246.2023.0256

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Performance analysis of precise point positioning of BeiDou-3 Navigation Satellite System

ZHU Xiaowei1, YUAN Zhanliang2, YANG Yaohuan3   

  1. 1. Henan college of Surveying and Mapping, Zhengzhou 451464, China;
    2. School of Surveying and Land Information Engineering, HeNan Polytechnic University, Jiaozuo 454000, China;
    3. College of Information Engineering, Zhengzhou University, Zhengzhou 450001, China
  • Received:2022-11-07 Published:2023-10-08

Abstract: BeiDou-3 navigation satellite system (BDS-3) was officially opened on July 31, 2020, providing high-precision positioning, navigation and time service for global users. Based on the dual-frequency undifferenced and uncombined precise point positioning (PPP) model, this paper systematically evaluates and compares the global positioning performance of BDS-3 PPP and GPS PPP from the convergence performance and positioning accuracy. The results show that the convergence performance and positioning accuracy of BDS-3 PPP and GPS PPP in the global scope are basically the same. The convergence time of static PPP in E,N,U direction is 16.8,8.6,19.0 min, and the positioning accuracy is 1.1,0.8,1.8 cm. The convergence time of kinematic PPP in E,N,U direction is 34.9,19.9,49.8 min, and the positioning accuracy is 4.4,3.2,7.8 cm. In the Asia Pacific region, the PPP positioning performance of BDS-2+BDS-3 integrated PPP is obviously better than that of GPS PPP especially in the positioning environment with high satellite cut-off elevations.

Key words: BeiDou-3 navigation satellite system, precise point positioning, Global Positioning System, convergence performance, positioning accuracy

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