坐标转换在某水利工程中的应用

Precision the Application and Discussion of Coordinate Transformation in a Water Conservancy Project

2000国家大地坐标系启用后,为了合理利用已有成果,需要将不同时期的测绘成果转换成2000国家大地坐标系。本文以西安80坐标系与2000国家大地坐标系在某水利工程中的转换为例,对转换公共点的选择进行探讨,分析了不同公共点对转换成果误差的影响。

After the 2000 national geodetic coordinate system was put into use,in order to make rational use of the ex⁃isting results,it is necessary to convert the surveying and mapping results of different periods into 2000 national geo⁃detic coordinate system.Taking the transformation of Xi'an 80 coordinate system and 2000 national geodetic coordi⁃nate system in a water conservancy project as an example,this paper discussed the selection of transformation com⁃mon points and analyzed the influence of different common points on the error of transformation results.