北京测绘2025，Vol.39Issue(10)：1528-1535,8.DOI:10.19580/j.cnki.1007-3000.2025.10.020
BDS-2/BDS-3精密单点定位性能分析
Performance analysis of BDS-2/BDS-3 precise point positioning
摘要
Abstract
To deeply explore the characteristics of inter-system biases(ISB)between BeiDou-2 navigation satellite system(BDS-2)and BeiDou-3 navigation satellite system(BDS-3)for B1I/B3I and B1C/B2a signals,as well as their impact on positioning performance,this paper conducted a series of precise evaluation experiments to analyze the practical application effects of these two types of signals in static and kinematic precise point positioning(PPP)techniques.The experimental results indicate that,compared with B1I/B3I signals,when BDS-2 and BDS-3 switch to B1C/B2a signals,despite an increase in ISB parameter values,both types of signals exhibit excellent performance in terms of intra-day and inter-day sta-bility.Furthermore,when BDS-2 and BDS-3 are combined,the performance of both static and kinematic PPP is signifi-cantly improved,with convergence time reduced by more than 52.4％and positioning accuracy increased by 46.0％.The B1C/B2a signals of BDS-3 outperform the B1I/B3I signals in convergence speed during the PPP solution process.When ISB parameters are further estimated with higher precision,the convergence time for BDS-2/BDS-3 in static PPP is reduced by 8.7％,and in kinematic PPP,it is decreased by 12.5％.Simultaneously,the positioning accuracy is further improved by 6.9％in both cases.Additionally,BDS-3's B1C/B2a signal demonstrates superior kinematic positioning accuracy compared to standalone global positioning system(GPS)and Galileo satellite navigation system(Galileo).The BDS-2/BDS-3 system achieves positioning accuracy improvements of 14.8％,13.4％,and 28.3％in the east(E),north(N),and up(U)direc-tions,respectively,along with a 14.1％reduction in convergence time,compared to the GPS/Galileo system.It also exhib-its stronger resistance to multipath interference and excellent ISB stability.关键词
精密单点定位/系统间偏差/北斗卫星导航系统/定位性能Key words
precise point positioning/inter-system bias/BeiDou navigation satellite system/positioning performance分类
测绘与仪器引用本文复制引用
曹中森..BDS-2/BDS-3精密单点定位性能分析[J].北京测绘,2025,39(10):1528-1535,8.基金项目
福建省自然科学基金(2023J01417) （2023J01417）
