深圳北斗CORS稳定性可视化分析方法

Visual Analysis Method of Stability of Shenzhen Beidou CORS

CORS系统在城市测绘基准的维护中占据主导地位,其稳定性分析理论随着卫星数量的增加也日趋完善。针对TEQC难以分析北斗卫星数据的问题,本文以深圳北斗CORS系统为例,利用ANUBIS软件对数据从完整性、信噪比和多路径等方面进行可视化分析,剔除观测时长不满0.75天的数据及其他质量较差数据,引入我国境内IGS站与CORS站联合平差,以ITRF2014框架下的坐标和速度为基准分析SZBDCORS网各站点稳定性情况,所得结论与各站点实际情况较为符合,对区域CORS站稳定性分析具有一定参考意义。

CORS system plays a leading role in the maintenance of Urban Surveying and mapping datum.With the increase of the number of satellites,the stability analysis of CORS system is becoming more and more stable.Aiming at the problem that it is difficult for TEQC to analyze Beidou CORS data,this paper takes Shenzhen Beidou CORS system(SZBDCORS)as an example,and makes visual analysis of CORS data from the aspects of integrity,signal-to-noise ratio and multipath based on ANUBIS software,Excluding the data with observation duration less than 0.75 days and other poor quality data,the paper introduces the joint adjustment of global IGS and CORS stations in China,and analyzes the stability of each station of SZBDCORS network based on the coordinates and speed under the framework of ITRF2014.The conclusion is more consistent with the actual situation of each station,which has certain reference significance for the stability analysis of regional CORS stations.