一种适用于CGCS2000坐标框架的多源数据融合方法  

A kind of applicable multi-source data fusion method for CGCS2000 coordinate framework

作　　者：柳根 程鹏飞[2] 成英燕[2] 张小红[1] LIU Gen;CHENG Pengfei;CHENG Yingyan;ZHANG Xiaohong(School of Geodesy and Geomatics.Wuhan University. Wuhan 430079,China;Chinese Academy of Surveying and Mapping, Beijing 100830, China)

机构地区：[1]武汉大学测绘学院,武汉430079 [2]中国测绘科学研究院,北京100830

出　　处：《测绘科学》2019年第3期1-7,共7页Science of Surveying and Mapping

基　　金：国家重点研发计划项目(2016YFB0501405);国家"863"计划项目(2013AA122501)

摘　　要：针对单一的GPS技术并不能准确地确定地球质心,无法真正地实现地心坐标参考框架,为了满足CGCS2000坐标框架对高精度地球质心和高精度尺度基准的需求,未来的CGCS2000坐标框架将是多源空间大地测量技术融合的组合框架,该文提出了一种适用于CGCS2000坐标框架,并基于GPS、VLBI、SLR等大地测量技术的数据融合方法,利用该方法进行多源大地测量观测数据融合得到组合坐标框架,将得到的结果与ITRF综合解进行比较。结果表明:GPS、VLBI、SLR测站各方向坐标平均误差值约20mm,速度场各方向平均误差约1mm/a,水平方向速度场误差小于垂直方向速度场误差,误差较大的测站多居于板块分界带及其边缘。基于实验结果表明,该方法可以满足CGCS2000坐标框架对多源数据融合的要求。At present,the implcmentation of CGCS2000 coordinate framework is mainly based on GPS technology.However,the single GPS technology cannol accurately determine the mass center of the earth and cannot realize the real geocentric coordinate frame reference.In order to meet the needs of highprecision the earth mass center and measurement datum of scale parameter,the future CGCS2000 coordinate framework will be a composed framework basing on multi-source space geodetic technology fusion.Phis paper suggests a kind multi-source geodesy technology fusion method with GPS/VLBI SLR data,applicable to CGCS2000 coord in ate frame,applying this method to form composed coordinate frame,and the results compared with ITRF comprehensive solution.The results show that the average coordinate error of each direction of GPS,VLEI,SLR stations is about 20 mm;the average velocity error of each direction of GPS,VLBI.SLR stations is less than 1 mm/a,the error of horizontal velocity field is generally less than the error of vertical velocity field.The larger error station is located in the plate boundary and its neighborhoods.Experimental results show that the method can meet the need of multisource data fusion for CGCS2000 coordinate framework.

关 键 词：CGCS2000 坐标框架 数据融合 全球定位系统 激光测卫 甚长基线干涉测量 

分 类 号：P228[天文地球—大地测量学与测量工程]