北京市WGS-84与CGCS2000坐标转换精度研究  

Research on coordinate conversion accuracy between WGS-84 and CGCS2000 in Beijing

作　　者：任政兆 朱照荣[1,2] 张锡越 曾艳艳 张凤录[1,2] REN Zhengzhao;ZHU Zhaorong;ZHANG Xiyue;ZENG Yanyan;ZHANG Fenglu(Beijing Institute of Surveying and Mapping,Beijing 100038 China;Beijing Key Laboratory of Urban Spatial Information Engineering,Beijing 100038 China)

机构地区：[1]北京市测绘设计研究院,北京100038 [2]城市空间信息工程北京市重点实验室,北京100038

出　　处：《北京测绘》2022年第4期478-482,共5页Beijing Surveying and Mapping

基　　金：北京市科技计划(D171100007417003)。

摘　　要：面对北京市地理信息建设需求和测绘基准不统一的问题,首先收集北京市15个基准站2020年的世界大地测量系(WGS-84)坐标和2000国家大地坐标系(CGCS2000)坐标,再通过分析和研究空间基准框架的差异性,建立二者的对应转换关系,编写WGS-84与CGCS2000转换软件。实验结果表明,基于布尔沙模型的方法进行坐标转换,北京市域转换精度为20 mm左右,符合北京市基本测量坐标转换的要求。In the face of the inconsistency between the needs of Beijing's geographic information construction and the surveying and mapping benchmark.Firstly,the WGS-84 coordinates of 15 benchmark stations in Beijing in 2020 and CGCS2000 coordinates were collected.By analyzing and studying the differences of spatial benchmark framework,the corresponding conversion relationship between them was established,and the conversion software between WGS-84 and CGCS2000 were compiled.The experimental results showed that the accuracy of coordinate transformation based on Bursa model in Beijing was about 20mm,which met the requirements of basic measurement coordinate transformation in Beijing.

关 键 词：测绘基准 2000国家大地坐标系(CGCS2000) WGS-84 坐标转换 

分 类 号：P226+.3[天文地球—大地测量学与测量工程]