局部小区域平面坐标转换方法的探讨
Discussion on Plane Coordinate Transformation Method of Local Small Area
杨中峰1
作者信息
摘要
随着全面启用2000国家大地坐标系以后,原有为WGS-84大地坐标系、1954年北京坐标系、1980西安坐标系及地方独立坐标系等成果数据需要转换到2000国家大地坐标系.因此,转换模型选择、重合点选取、参数计算、精度评定等环节关系到转换成果的精度.文章简述坐标转换流程并以案例探讨局部小区域平面坐标转换中控制点、转换模型和重合点的选取对转换精度的影响,得出相关结论,供参考.
Abstract
With the full use of the 2000 national geodetic coordinate system,the original data of WGS-84 geodetic coordinate system,Beijing coordinate system in 1954,Xi'an coordinate system in 1980 and local independent coordinate system need to be converted to the 2000 national geodetic coordinate system.Therefore,the selection of transformation model,the selection of coincidence point,parameter calculation and accuracy evaluation are related to the accuracy of transformation results.This paper briefly describes the coordinate transformation process and discusses the influence of the selection of control points,transformation models and coincidence points on the transformation accuracy in the plane coordinate transformation of local small areas with cases,and draws relevant conclusions for reference.
关键词
坐标转换/转换模型/重合度/精度评定Key words
transformation model/contact ratio/accuracy evaluation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据