测绘通报 ›› 2023, Vol. 0 ›› Issue (9): 1-5.doi: 10.13474/j.cnki.11-2246.2023.0255

• BDS-3精度评估及应用 •    下一篇

不同时期的BDS-3精密单点定位性能分析

崔阳1, 陈正生2, 魏佼琛1   

  1. 1. 陆军勤务学院, 重庆 401331;
    2. 火箭军工程大学, 陕西 西安 710025
  • 收稿日期:2022-12-29 发布日期:2023-10-08
  • 作者简介:崔阳(1988—),男,博士,讲师,主要从事BDS/GNSS数据处理与应用研究。E-mail:cuiyangtj@126.com
  • 基金资助:
    重庆市自然科学基金(CSTB2022NSCQ-MSX1129);重庆市教委科学技术研究计划(KJZD-K202312905);国家自然科学基金(41804006)

Performance analysis of BDS-3 precise point positioning in different periods

CUI Yang1, CHEN Zhengsheng2, WEI Jiaochen1   

  1. 1. Army Logistics University of PLA, Chongqing 401331, China;
    2. Rocket Force University of Engineering, Xi'an 710025, China
  • Received:2022-12-29 Published:2023-10-08

摘要: 本文分析了全球23个MGEX测站在不同时期接收到的BDS-3的卫星数量变化情况,对不同时期的MGEX测站BDS-3数据进行精密单点定位解算,对比分析了BDS-3卫星数目变化对精密单点定位精度与收敛时间的影响。结果表明:①相较于2021年DOY 1,2022年DOY 1全球23个MGEX测站接收到的BDS-3卫星平均数由6.2颗增加到11.1颗。②地面测站接收到更多的BDS-3卫星后,静态PPP精度提高了11.4%,收敛时间缩短了18%;模拟动态PPP的精度提高了28.0%,收敛时间缩短了31.9%。

关键词: BDS-3, MGEX, 卫星数量, PPP, 定位精度

Abstract: Based on the analysis of the change of the number of BDS-3 satellites received by 23 MGEX stations in different periods, the precise point positioning (PPP) of BDS-3 data in different periods is calculated, and the effect of variation in the number of BDS-3 satellites on the accuracy and convergence time of PPP is compared and analyzed.The results show that: ①Compared with DOY 1 in 2021 and 2022, the average number of BDS-3 satellites received by the 23 MGEX stations in the world increased from 6.2 to 11.1.②After the ground station receives more BDS-3 satellites, the static PPP accuracy is increased by 11.4%, and the convergence time is shortened by 18%; The accuracy of simulated dynamic PPP is improved by 28.0%, and the convergence time is reduced by 31.9%.

Key words: BDS-3, MGEX, number of satellites, PPP, positioning accuracy

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