Galileo高精度定位服务初始服务性能评估  

Performance Evaluation of the Initial Service of Galileo High Accuracy Service

作　　者：季锐 刘长建[1] 王敏[1] 孙爽 孟欣 JI Rui;LIU Changjian;WANG Min;SUN Shuang;MENG Xin(School of Surveying and Mapping,Information Engineering University,62 Kexue Road,Zhengzhou 450001,China;63660 Troops of PLA,Luoyang 471000,China)

机构地区：[1]信息工程大学地理空间信息学院,郑州市450001 [2]63660部队,洛阳市471000

出　　处：《大地测量与地球动力学》2024年第1期21-26,共6页Journal of Geodesy and Geodynamics

摘　　要：从服务改正数可用性、轨道钟差精度等方面综合分析高精度定位服务(high accuracy service,HAS)的性能,同时利用全球各区域的多模GNSS实验跟踪网(multi-GNSS experiment,MGEX)测站分析HAS PPP的性能。结果表明,大部分卫星改正数的可用性在80%以上;GPS和Galileo的空间信号测距误差(signal-in-space ranging error,SISRE)分别为0.163 m、0.097 m;MGEX测站水平方向定位精度均小于0.2 m,垂直方向均小于0.4 m。This paper comprehensively analyzes the performance of high accuracy service(HAS)from the aspects of service correction availability,track accuracy,clock correction accuracy,and so on.At the same time,we analyze the performance of HAS PPP using MGEX stations in different regions of the world.The results show that the availability of most satellite corrections is at least 80%.Signal-in-space ranging error(SISRE)of GPS and Galileo are 0.163 m and 0.097 m,respectively.The accuracy of MGEX stations is less than 0.2 m in the horizontal direction and 0.4 m in the vertical direction.

关 键 词：HAS 改正数精度 定位性能 实时精密单点定位 

分 类 号：P228[天文地球—大地测量学与测量工程]