求取小区域GPS网CGCS2000坐标的方法研究  

Discussion on solving CGCS2000 coordinate of small region GPS network

作　　者：肖飞[1] 

机构地区：[1]桂林理工大学南宁分校,南宁530021

出　　处：《测绘科学》2013年第3期5-6,13,共3页Science of Surveying and Mapping

基　　金：广西教育厅科研项目(桂教科研[2006]26~121);广西自然科学基金项目(桂科基0991023)

摘　　要：本文通过联测IGS跟踪站获取南宁地区若干控制点的ITRF框架瞬时历元坐标,并根据IGS跟踪站速度内插出南宁地区地壳板块运动速度,从而将控制点ITRF坐标进行历元转换与框架转换;同时根据南宁某CORS站观测值所求板块运动速度,对相关结论进行验算。结果表明:基于准确的板块运动速度场,采用历元与框架转换方式求取CGCS2000坐标能够满足小区域GPS控制测量的精度要求。n this paper, the crustal velocity of Nanning region was computed by interpolating the velocities of IGS tracking sta- tions that belong to the same crustal plate nearby. Then the coordinates of test control points in ITRF2005 were transformed. Further- more, comparing with the velocity feild computed from Continuously Operating Reference Stations （CORS） in Nanning, the newly co- ordinates transformation method was verified to be able to fully meet the requirement of small region GPS control survey.

关 键 词：CGCS2000 ITRF2005 框架转换 历元转换 地壳板块运动速度 

分 类 号：P22[天文地球—大地测量学与测量工程]