测绘通报 ›› 2023, Vol. 0 ›› Issue (9): 6-11,58.doi: 10.13474/j.cnki.11-2246.2023.0256

• BDS-3精度评估及应用 • 上一篇    下一篇

北斗三号卫星导航系统精密单点定位的性能分析

朱小韦1, 袁占良2, 杨耀环3   

  1. 1. 河南测绘职业学院, 河南 郑州 451464;
    2. 河南理工大学测绘与国土信息工程学院, 河南 焦作 454000;
    3. 郑州大学信息工程学院, 河南 郑州 450001
  • 收稿日期:2022-11-07 发布日期:2023-10-08
  • 作者简介:朱小韦(1981—),男,硕士,讲师,主要研究方向为GNSS精密定轨。E-mail:187052635@qq.com
  • 基金资助:
    国家自然科学基金(41572341)

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

摘要: 北斗三号卫星导航系统(BDS-3)于2020年7月31日正式开通,为全球用户提供高精度的定位、导航和授时服务。本文基于双频非差非组合精密单点定位(PPP)模型,从收敛性能和定位精度系统评估和对比BDS-3 PPP和GPS PPP的全球定位性能。结果表明,全球范围内的BDS-3 PPP与GPS PPP的定位性能基本相当,静态PPP在E、N、U方向的收敛时间分别为16.8、8.6、19.0 min,定位精度分别为1.1、0.8、1.8 cm;动态PPP在E、N、U方向的收敛时间分别为34.9、19.9、49.8 min,定位精度分别为4.4、3.2、7.8 cm。在亚太地区,尤其在高卫星截止高度角定位环境下,BDS-2与BDS-3融合PPP定位性能明显优于GPS PPP。

关键词: BDS-3, PPP, GPS, 收敛性能, 定位精度

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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