西半球IGS站北斗、Galileo和GPS定位精度分析  

Comparative Analysis of BDS, Galileo and GPS Positioning Accuracy Based on GAMIT/GLOBK Software

作　　者：杨佳林 杨黎黎 YANG Jialin;YANG Lili(Qinghai Nonferrous Metals First Geological Exploration Institute,Xining 810001,China;Qinghai Zhenghe Engineering Management Co.,Ltd.,Xining 810001,China)

机构地区：[1]青海省有色第一地质勘查院,青海西宁810001 [2]青海正和工程管理有限责任公司,青海西宁810001

出　　处：《地理空间信息》2022年第11期85-87,共3页Geospatial Information

基　　金：国家自然科学基金资助项目(41674017、41731071);青海省自然科学基金资助项目(2018-ZJ-928Q)。

摘　　要：随着北斗和Galileo系统的逐步建设完成,卫星定位解算软件GAMIT/GLOBK的新版本也可支持北斗和Galileo系统。结合GPS系统,对比分析了GAMIT/GLOBK软件解算三大系统的定位精度。研究结果表明,在搜星个数、相位噪声、模糊度固定率和定位精度等多个维度上,GPS系统均优于其他两个系统。分析其原因发现,卫星轨道精度和搜星个数对坐标稳定性具有很大影响。With the gradual completion of BDS and Galileo system construction, the new version of GAMIT/GLOBK also supports BDS and Galileo system. Combining with GPS system, we compared and analyzed the positioning accuracy of GAMIT/GLOBK software in three systems. The results show that GPS system is superior to the other two systems in terms of the number of accepted satellites, the phase noise, the fixed rate of fuzziness and the positioning accuracy. The accuracy of satellite orbit and the number of accepted satellites have great influence on the coordinate stability.

关 键 词：北斗 GAMIT 卫星轨道精度 坐标稳定性 

分 类 号：P228.4[天文地球—大地测量学与测量工程]