GAMIT(10.7)用于GLONASS/BDS精密相对定位性能测试与分析

Performance test and analysis of GLONASS/BDS precision relative positioning with GAMIT(10.7)

2018年6月GAMIT发布了10.7版本,此版本新增加了GLONASS系统。文中首先介绍新版本GAMIT(10.7)的特点和功能,详细讨论分析了GAMIT(10.7)解算结果的可靠性及精度评价指标。为了验证GAMIT(10.7)对GLONASS/BDS的精密相对定位的可靠性及精度,使用HKCORS的数据分别对GPS,GLONASS,BDS进行解算。从NRMS,RMS、模糊度固定率方面详细分析解算可靠性;从实验结果可知,GLONASS和BDS相对于GPS在平面及高程方向的差值均在mm级,相对精度达到10-8量级,由此证明GAMIT(10.7)可用于GLONASS和BDS的精密相对定位并且精度比较可靠。

In June of 2018,GAMIT released version 10.7,which added new GLONASS system.This paper first introduces the features and functions of the new version of GAMIT(10.7),and discusses in detail the reliability and accuracy evaluation index of the result of GAMIT(10.7)calculation.In order to verify the reliability and accuracy of GAMIT(10.7)precise relative positioning of GLONASS/BDS,the HKCORS data are used to calculate GPS,GLONASS,BDS separately.A detailed analysis of the solution is made from the fixed rate of NRMS,RMS,and ambiguity.From the experimental results,the difference between GLONASS and BDS relative to GPS in plane and elevation is in millimeter order,and the relative accuracy is 10-8.It is proved that GAMIT(10.7)can be used in the precise relative positioning of GLONASS and BDS,of which the accuracy is relatively reliable.