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。
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.
作者
朱小韦
袁占良
杨耀环
ZHU Xiaowei;YUAN Zhanliang;YANG Yaohuan(Henan college of Surveying and Mapping,Zhengzhou 451464,China;School of Surveying and Land Information Engineering,HeNan Polytechnic University,Jiaozuo 454000,China;College of Information Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《测绘通报》
CSCD
北大核心
2023年第9期6-11,58,共7页
Bulletin of Surveying and Mapping
基金
国家自然科学基金(41572341)。
关键词
BDS-3
PPP
GPS
收敛性能
定位精度
BeiDou-3 navigation satellite system
precise point positioning
Global Positioning System
convergence performance
positioning accuracy
