临泽县国土资源空间数据2000国家大地坐标系转换  

The Transformation of Land and Resources Spatial Data of Linze County to CGCS2000

作　　者：王江林 WANG Jianglin(Guangzhou South Surveying and Mapping Technology Company Limited,Guangzhou Guangdong 510663,Chian)

机构地区：[1]广州南方测绘科技股份有限公司,广东广州510663

出　　处：《北京测绘》2019年第5期550-554,共5页Beijing Surveying and Mapping

摘　　要：基于国土资源空间数据2000国家大地坐标系转换项目的开展,本文首先介绍了高精度CGCS2000坐标获取方法,并确定了城区坐标系与CGCS2000之间的转换关系,然后分别采用直接求取和顾及投影中央子午线和平均高程面的方法求取四参数、评定转换精度以及确定适用范围,形成的坐标转换思路对相关项目开展具有一定指导意义。Based on the develop project of land and resources spatial data convert to CGCS2000,firstly,this paper introduces the method of CGCS2000 coordinate acquisition with high precision,and determining the transformation of urban coordinate system and CGCS2000,then the 4-para are obtained by direct calculation and taking into account the projected central meridian and average elevation respectively,evaluation conversion accuracy and determine the scope of application,the thought of coordinate transformation formed has certain guiding significance for the development of related projects.

关 键 词：独立坐标系 转换参数 高斯投影 平均高程面 

分 类 号：P258[天文地球—测绘科学与技术]