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
柳根,程鹏飞,成英燕,张小红
摘要(Abstract):
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。
关键词(KeyWords): 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
基金项目(Foundation): 国家重点研发计划项目(2016YFB0501405);; 国家“863”计划项目(2013AA122501)
作者(Author): 柳根,程鹏飞,成英燕,张小红
DOI: 10.16251/j.cnki.1009-2307.2019.03.001
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