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为了有效控制高速铁路全球定位系统(GPS)控制网投影变形,利用椭球变换、椭球面向球面投影以及球面圆柱投影基本理论,探讨了斜轴墨卡托投影的处理方法。通过算例分析表明,斜轴墨卡托投影与高斯投影相比,可有效控制长度变形,避免高斯投影分带过多的问题,因此该投影在高铁以及其它线路工程控制网中具有一定的优越性。
In order to effectively control the deformation of the GPS network of high speed railway, the processing method of inclined axis Mercator projection is discussed by using the basic theory of ellipsoid transformation, ellipsoid spherical projection and spherical cylindrical projection. The numerical examples show that compared with Gaussian projection, oblique axis Mercator projection can effectively control the length deformation and avoid the problem of excessive Gaussian projection. Therefore, this projection has certain superiority in high-speed rail and other line engineering control networks Sex.