困难地区绕城公路独立坐标系建立方法研究

The Research on Independent Coordinate System Establishment Method of Difficult Area Circumferential Highway Construction

文章以长距离、高海拔环城高速公路独立坐标系建立为例,介绍了长度投影变形理论,通过合理划分分区、确定分区投影中央子午线和投影高程面,有效消除或削弱投影长度综合变形,以满足工程的实际需要.

This paper based on the independent coordinate system establishment of long distance and high altitude city highway as an example,the length deformation theory of the projection is introduced.In order to meeting the practical requirement of engineering,through reasonable zoning,determine the central meridian and the elevation projection plane,the influence of the projection deformation is ef fectively reduced.