一种建立高程抵偿坐标系的方法研究

A Method to Establish the Offset Coordinate System of Elevation

在各种高精度测量控制网建立过程中,经常会出现边长投影长度变形值大于2.5 cm/km的情况,这不能满足工程建设对精度的需求。为解决这一问题,常需建立高程抵偿坐标系来减小或避免因高斯投影长度变形所带来的影响。本文分析了两类高斯投影变形来源,阐述了一种建立高程抵偿坐标系的方法与原理,用C#语言编写了相关测量程序并对工程数据进行了计算。

In the process of establishing all kinds of high precision GPS surveying and control net,frequently,side length projection deformation value is greater than 2.5 cm/km.It doesn't meet the demand for precision engineering construction.In order to solve this problem,often need to establish elevation counter coordinate system to reduce or avoid the effects of gauss projection length deformation.This paper analyzes the source of two classes of gauss projection deformation.This paper expounds the a building elevation counter method and the principle of coordinate system,Using C#language to write the related measurement procedures for engineering data were calculated.