合肥市CGCS2000坐标转换参数分区解算实践  

Partition Calculation Practice of CGCS2000 Coordinate Transformation Parameters in Hefei City

作　　者：王林[1] 张伟 Wang Lin;Zhang Wei(Hefei Surveying and Mapping Design and Research Institute,Hefei 230061,China)

机构地区：[1]合肥市测绘设计研究院,安徽合肥230061

出　　处：《城市勘测》2021年第2期112-115,共4页Urban Geotechnical Investigation & Surveying

摘　　要：CGCS2000是我国当前唯一的空间参考基准,转换参数解算是实现历史数据向CGCS2000转换的核心环节。在综合分析合肥市区域特点和坐标系统使用现状的基础上,总结转换参数解算的技术难点,通过试算提出分区解算的技术思路,利用源坐标成果作为重合点和外部检查点,对解算结果进行精度评定,得出根据行政区划进行分区和利用源坐标成果作为重合点的方法在实践中是可行的结论。CGCS2000 is the only spatial reference datum in China,and the conversion parameter calculation is the key to realize the conversion from historical data to CGCS2000.Based on the comprehensive analysis of the regional characteristics and the current situation of coordinate system in Hefei City,this paper summarizes the technical difficulties of conversion parameter solution,puts forward the technical idea of partition solution through trial calculation,uses the source coordinate results as coincidence points and external check points,evaluates the accuracy of the solution results,and obtains the conclusion that the method of partition according to administrative divisions and using the source coordinate results as coincidence points is feasible in practice.

关 键 词：CGCS2000 转换参数 重合点 精度评定 分区 

分 类 号：P226.3[天文地球—大地测量学与测量工程]