不同时期的BDS-3精密单点定位性能分析  

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

作　　者：崔阳 陈正生 魏佼琛 CUI Yang;CHEN Zhengsheng;WEI Jiaochen(Army Logistics University of PLA,Chongqing 401331,China;Rocket Force University of Engineering,Xi an 710025,China)

机构地区：[1]陆军勤务学院,重庆401331 [2]火箭军工程大学,陕西西安710025

出　　处：《测绘通报》2023年第9期1-5,共5页Bulletin of Surveying and Mapping

基　　金：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)。

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%。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%.

关 键 词：BDS-3 MGEX 卫星数量 PPP 定位精度 

分 类 号：P228[天文地球—大地测量学与测量工程]