基于ITRF14框架的URCORS坐标分析

Stability analysis of URCORS station based on GAMIT

采用国内外认可的高精度GNSS数据处理软件GAMIT/GLOBK,联合乌鲁木齐周边9个IGS站解算了乌鲁木齐市连续运行基准站系统(URCORS)2018至2019年期间在更换接收机天线前后的6期数据,并基于ITRF14框架下进行整体变化性分析。在对解算结果进行可靠性分析后,获取了ITRF14下的区域网解并进行坐标分析,得到URCORS基准站的坐标变化序列。通过分析发现,URCORS坐标在ITRF14框架下没有发生较大的突变,整体变化较稳定。

Adopt high-precision GNSS data processing software GAMIT/GLOBK recognized at home and abroad, the data of Urumqi Continuous Operation Reference Station System(URCORS) in six periods before and after the replacement of receiver antenna during 2018~2019 were calculated by combining 9 IGS stations near Urumqi, and the overall variation analysis was conducted based on ITRF14 framework. After the reliability analysis of results, the regional network solution under ITRF14 was obtained and the coordinate time series analysis of URCORS reference station as carried out. The results show that URCORS station is relatively stable and there are no systematic biases.