椭球变换建立区域坐标系方法的应用研究

Application research of establishment of regional coordinate system based on ellipsoid transformation

椭球面和高斯平面尺度比不同,产生了投影变形的问题,尤其是高海拔地区与位于高斯投影带边缘的地区,投影变形更大。因此,按常规方法建立坐标系会导致精度的降低,影响城市、矿山等的建设,利用椭球变换建立区域性独立坐标系能更好的解决该类问题。就椭球变换建立区域坐标系方法的理论原理进行了分析与总结,并用实例进行了验证。结果表明,利用椭球变换建立区域坐标系的方法精度明显高于传统的方法。

The plane scale ratio of ellipsoidal surface and the gauss are different, which results in the problem of projection distortion. Especially, the projection deformations of the high altitude area and area located at the edge of the Gauss project are larger. Therefore, according to the conventional method, the coordinate system based on the normal method leads to the reduction of accuracy, which will affect the construction of cities, mines and so on. Using the ellipsoid transformation to establish the regional independent coordinate system can solve this kind of problem. This paper analyzes and summarizes the theory of the ellipsoid transformation to establish the regional coordinate system, and verified by examples. The results indicate that the accuracy of the method of ellipsoid transformation to establish the regional coordinate system is more significantly accurate than that of the traditional method.