工程独立坐标系的建立方法及应用

Establishment Method and Application of Engineering Independent Coordinate System

工程建设中,为了满足投影长度变形的要求,往往需要建立工程独立坐标系。本文在分析投影变形高程归化和高斯投影变形规律基础上,推求工程独立坐标系抵偿高程面与参考椭球面的关系,进而建立独立坐标椭球转换模型,减少高程归化变形影响。通过具体工程实例,探讨工程独立坐标系的建立方法,对不同的转换模型进行对比分析,为类似工程提供借鉴。

In engineering construction,in order to meet the requirements of projection length deformation,it is often necessary to establish engineering independent coordinate system.Based on the analysis of projection deformation height reduction and Gauss projection deformation law,this paper deduces the relationship between engineering independent coordinate system compensation elevation surface and reference ellipsoid surface,and then establishes independent coordinate ellipsoid transformation model to reduce the influence of elevation reduction deformation.Through specific engineering examples,the establishment method of engineering independent coordinate system is discussed,which can provide reference for similar projects.