亚太地区GPS/GLONASS/Galileo/BDS组合实时精密单点定位性能评估

Performance Evaluation of Real-Time Precise Point Positioning with GPS/GLONASS/Galileo and BDS Observations over the Asia-Pacific Region

对GPS/GLONASS/Galileo/BDS组合实时PPP(precise point positioning)在亚太地区的性能进行了评估,利用25个测站的数据进行分析。结果表明,在静态模式下,和GPS单系统实时PPP相比,四系统组合实时PPP的收敛时间在东、北、高三个方向分别改善了43%、19%、26%,定位精度在三个方向分别改善了16%、25%、10%;在动态模式下,相应的收敛时间改善为61%、35%、51%,相应的精度改善为29%、30%、21%。

This paper focuses on the performance evaluation of real-time PPP with GPS,GLONASS,Galileo and BDS observations over the Asia-Pacific region.The datasets from 25stations are adopted.Compared with the GPS-only realtime PPP,the four-constellation integrated real-time PPP reduces the convergence time by 43%,19%and 26%,and improves the positioning accuracy by 16%,25%and 10%in the east,north and up directions in the static mode respectively.The corresponding improvement on convergence time and positioning accuracy is 61%,35%and 51%,and 29%,30%and 21%in the three directions in the kinematic mode respectively.