摘要
基于大地坐标全微分公式探讨了54和80坐标之间的相互转换问题,对常用的3 参数法和7 参数法做了一些改进。用参数法进行坐标转换,参加运算的已知控制点决定了转换结果的精度。笔者基于湖北省内的控制成果库,通过实验分析了控制点的选取范围、参加运算的控制点的个数及控制点的等级对转换结果的影响。
The paper discusses transform between Bejing 54 and Xi＇an 80 coordinates system based on the whole differential equation of geodesic, and some improvement has been made in the 3 parameter method and the 7 parameter method. And the experimentation, which is based on the geodetic database in Hubei province, has been made to analyse the effect of the range, account and precision grade of known control points on the calculating result.
出处
《工程地球物理学报》
2005年第1期69-72,共4页
Chinese Journal of Engineering Geophysics
关键词
54坐标
80坐标
参数法
坐标转换
54 coordinate system
80 coordinate system
parameter method
coordinate transform
