BDS GEO卫星对GPS精密单点定位的影响分析  

Analysis of the influence of BDS GEO satellite on GPS Precise Point Position of GPS

作　　者：汪宇豪 孟瑞祖 田先才 WANG Yuhao;MENG Ruizu;TIAN Xiancai(School of Surveying Science and Engineering,Shandong University of Science and Technology,Qingdao 266000,China;Beijing Aerospace Hongtu Information Technology Co.,Ltd,Beijing 100089,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266000 [2]北京航天宏图信息技术股份有限公司,北京100089

出　　处：《全球定位系统》2019年第6期52-57,共6页Gnss World of China

摘　　要：为了研究北斗卫星导航系统(BDS)GEO卫星对全球中圆地球轨道(MEO)星座精密单点定位(PPP)的影响,本文利用MGEX站点连续7天的观测数据,将BDS GEO卫星和MEO卫星进行组合,对可见卫星数,定位精度和收敛时间进行了分析.实验结果表明,在MEO卫星中加入GEO卫星可以得到更好的空间几何构型,两者的定位精度相当;GEO卫星和MEO卫星组合可以缩短收敛时间,在MEO卫星定位较差时,加入GEO卫星可以提高定位的可靠性.In order to study the influence of BDS GEO satellite on the precise point positioning of MEO constellation,this paper analyzes the visible satellite number,positioning accuracy and convergence time of combination of BDS GEO satellite and MEO satellite,observation are from MGEX station for 7 consecutive days.The experimental results show that better patial geometry can be obtained with the addition of GEO satellites to MEO satellites.The convergence time can be shortened with combination of GEO satellite and MEO satellite.Reliability of positioning can be improved with addition of GEO satellites,when positioning results of MEO satellite is poor.

关 键 词：BDS/GPS 精密单点定位 GEO卫星 定位精度 收敛时间 

分 类 号：P228.4[天文地球—大地测量学与测量工程]