基于ArcGIS的2000国家大地坐标系转换研究

Research on the Conversion of 2000 National Geodetic Coordinate System Based on ArcGIS

2008年我国新启用2000大地坐标系,但当前很多地理信息数据都是基于北京54坐标系、1980西安坐标系和地方坐标系。本文以西安80坐标系到2000国家坐标系之间的转换为例,给出了基于ArcGIS环境下坐标系转换流程,分析了坐标转换过程中关键环节技术问题,并对转换结果进行精度分析,效果良好。本文所述方法与流程可以满足1:500比例尺图件的坐标系统转换。

2000 geodetic coordinate system was newly launched in 2008 in China, but at present many geographic information data are based on Beijing 54 Coordinate system, Xi’an 1980 coordinate system and local coordinate system. Taking the transformation between Xi’an 80 coordinate system and 2000 national coordinate system as an example, the transformation process of coordinate system based on ArcGIS is given, the key technical problems in the process of coordinate transformation are analyzed, and the accuracy of the transformation results is analyzed, with good results. The method and process described in this paper can satisfy the coordinate system transformation of 1:500 scale drawings.