WGS84与CGCS2000坐标的精密转换方法和程序实现  

Precise Transformation Method and Program Realization Between WGS84 and CGCS2000 Coordinates

作　　者：张祥文 陈正伟 ZHANG Xiang-wen;CHEN Zheng-wei(Shanghai Marine Surveying and Mapping Department,Shanghai 200090,China)

机构地区：[1]上海海事测绘中心,上海200090

出　　处：《海洋技术学报》2020年第6期1-7,共7页Journal of Ocean Technology

摘　　要：GPS的精密定位成果属于WGS84坐标系,与我国法定坐标系CGCS2000之间存在分米级差异,且因参考框架及板块运动等原因,两者的差异随时间推移而越来越大,这一差异在控制点测定及大比例尺测绘中已不能忽略。本文研究了在未联测CGCS2000坐标控制点的情况下WGS84与CGCS2000的坐标转换方法,采用IERS公布的框架转换参数及CPM-CGCS2000板块欧拉矢量开发了相应转换程序,实现测量成果在两者之间的批量转换。通过实践对比,转换精度达到厘米级,能满足使用需求。The precision positioning results of GPS belong to the WGS84 coordinate system,and there is a decimeter difference between WGS84 and CGCS2000.Due to the reference frame and plate movement,the difference is increasingly largerover time,which cannot be ignored in the measurement of control points and large-scale mapping.The coordinate transformation method of WGS84 and CGCS2000 is studied without joint measurement of CGCS2000 coordinate control points.The corresponding transformation program is developed by using the frame transformation parameters published by IERS and the Euler vector of CPM-CGCS2000 plate to realize the batch conversion of measurement results between them.Through practical comparison,the conversion accuracy reaches centimeter level,which can meet the requirements of application.

关 键 词：WGS84坐标系 CGCS2000坐标系 板块运动 欧拉矢量 坐标转换 

分 类 号：P221[天文地球—大地测量学与测量工程]