基于DWG图形文件制作复杂地形区域kml文件的方法及精度分析

【摘要】 阐述直接导出、同名点坐标转换、投影变形处理等基于DWG图形文件制作复杂地形区域kml文件的制作方法,并对三种方法进行实例介绍;对直接导出法与投影变形处理法进行精度分析比较,对同名点坐标转换、投影变形处理三种方法进行精度分析比较;提出投影变形处理法对基于DWG图形文件制作复杂地形区域kml文件精度最高的结论。更多还原

【Abstract】 This paper expounds the methods of making KML files of complex terrain area based on DWG graphic files,such as direct export,coordinate transformation of same-name points,and processing of projection deformation,and introduces three methods with examples.The precision of the direct derivation method and the projection deformation processing method are analyzed and compared,and the accuracy analysis and comparison of the coordinate transformation of the same name point and the projection deformation processing method are carried out.This paper puts forward the conclusion that the precision of kml file in complex terrain area based on DWG drawing file is the highest by the method of projection deformation processing.更多还原