基于 EPS 地理信息工作站实现芜湖市基础测绘数据的坐标转换

摘要

基于芜湖独立坐标系与2000国家大地坐标系之间的公共点坐标值，利用EPS地理信息工作站包含的坐标转换软件所选取的平面四参数转换模型计算出芜湖独立坐标系转为CGCS2000的转换参数，然后编写EPS转换脚本实现基础测绘数据从芜湖独立坐标系到2000国家大地坐标系之间的转换工作。 EPS脚本语言遵循VBScript和JScript语言标准，支持用户在EPS平台上进行二次开发，利用EPS坐标转换脚本完成基础测绘数据转换可以使转换数据无丢失，转换精度高。%In this paper we use coordinate transformation software in EPS GIS workstation to select plane four param -eters transformation model to compute the transformation parameters between Wuhu independence coordinate reference system and CGCS 2000 based on the public points'coordinate values both in Wuhu independence coordinate reference system and the 2000 China Geodetic coordinate system ( CGCS 2000 ) .Then adopting EPS script to transform the basic surveying data with Wuhu independence coordinate reference system to CGCS 2000.EPS script follows the language standard of VBScript and JScript ,and supports second development on EPS platform .Using EPS coordinate transforma-tion script makes the data not to be lose and with high accuracy .