BDS形变监测数据的精密处理及精度评估  

Precision Processing and Accuracy Evaluation of BDS Deformation Monitoring Data

作　　者：李良发 乔学军[1] 聂兆生[1] 王坦 LI Liangfa;QIAO Xuejun;NIE Zhaosheng;WANG Tan(Key Laboratory of Earthquake Goodesy,Insitute of Seismology,China Earthquake Administration,Wuhan 430071,China;China Earthquake Networks Center,Beijing 100045,China)

机构地区：[1]中国地震局地震研究所地震大地测量重点实验室,湖北武汉430071 [2]中国地震台网中心,北京100045

出　　处：《测绘地理信息》2020年第6期12-17,共6页Journal of Geomatics

基　　金：国家自然科学基金(41731017,41474097)。

摘　　要：利用GAMIT/GLOBK软件,采用双差模式分别对2017-01-01-06-28期间中国大陆构造环境监测网络(陆态网络)12个基准站的北斗导航卫星系统(BeiDou navigation satellite system,BDS)和全球定位系统(global positioning system,GPS)观测数据进行精密处理,对比分析了BDS和GPS的基线及网平差结果及精度。结果表明,BDS基线的水平向重复性基本优于1 cm,垂向重复性约为厘米级;GPS基线重复性在3个方向均为毫米级。BDS和GPS单天解坐标差值的均方根(root mean square,RMS)统计分析表明,两者在水平向上相差为毫米级,垂向相差1~2 cm。BDS静态相对定位在水平方向已可满足亚厘米级高精度监测,在垂向可满足厘米级精度监测的需求。This paper uses GAMIT/GLOBK and double difference model to process precisely the date of Beidou and GPS observations of 12 CMONOC reference stations from 1 January to 28 June 2017 and the accuracy of Beidou and GPS baseline and network adjustment results are compared and analyzed. The results show that the baseline repeatability of Beidou is basically within 1 cm in the horizontal direction and the vertical repeatability is cm level;GPS baseline repeatability is mm level in all three directions. The RMS values of the difference between Beidou and GPS single day solution of coordinates are calculated and analyzed. In horizontal direction, the difference is mm level, and the vertical difference is 1~2 cm. Beidou static relative positioning is able to meet the millimeter-level high precision positioning field in the horizontal direction and vertical positioning precision can be applied to cm level or lower field.

关 键 词：GAMIT/GLOBK 相对定位 北斗导航卫星系统 全球定位系统 精密定位 

分 类 号：P228[天文地球—大地测量学与测量工程]