图件更新北京54和西安80坐标系转换方法研究

Research on practical map update coordinates transformation between Beijing' 54 and Xian' 80 geodetic coordinates systems for map update

本文结合国土资源调查图件更新北京54和西安80坐标系转换的具体特点,对各种坐标转换模型进行了分析,研究了一种实用的坐标转换模型。在此基础上编制了适用于国土资源调查中图件更新北京54和西安80坐标系转换特定用途的坐标转换软件,利用实际资料对软件进行了测试分析,测试结果表明,这种实用的坐标转换方法可以满足国土资源调查对坐标转换精度的要求。

There are several geodetic coordinates systems in China,such as Beijing'54 geodetic coordinates system,Xian'80 geodetic coordinates system,WGS-84,etc.These coordinates systems coexist together,and each has its characteristic and applications.A practical coordinates transformation method for map updating is investigated and the transformation results are analyzed and compared in this paper.The transformation results show that this practical method is bale to meet the requirements of land surveying.