小范围地形图坐标系转换方法探讨

Discussion on the Small-scale Topographic Map Coordinate System Conversion Method

日常的测绘工作中,往往会遇到地形图坐标系不一致的问题,本文首先阐述了常用的一些坐标系转换方法;然后结合宜昌市某个涉及地形图坐标系转换的项目介绍了一种使用EPS进行地形图转换的方法,该方法能够很好地对DWG格式地形图和EDB格式地形图进行坐标系转换;最后通对地形图中点、线、面要素的转换精度进行了分析和比较。

Day-to-day work of surveying and mapping, often encounter the problem of inconsistent topographic map coordinate system,the paper first describes the common coordinate system conversion method;then combined Yichang City, a topographic map coordinate system conversion project involves a useEPS topographic map conversion method DWG format topographic maps and EDB format topographic map coordinate system conversion;Finally, through analysis and conversion accuracy of the midpoint of the topographic map ,line, surface elements.