双重投影在高速铁路测量中的应用分析  

Application Analysis of Double Projection in High-Speed Railways Surveying

作　　者：刘灵杰[1,2] 卫建东[1] 白振慧 

机构地区：[1]信息工程大学测绘学院,河南郑州450052 [2]96251部队,河南洛阳471002 [3]66240部队,北京100042

出　　处：《测绘科学技术学报》2009年第2期121-124,共4页Journal of Geomatics Science and Technology

摘　　要：针对目前我国高速铁路测量采用的高斯投影独立坐标系每个投影带可控制范围太小,给施工带来很多不便的问题,提出了首先将椭球面经纬度投影至球面后再沿铁路线方向进行斜墨卡托投影的原理、方法和计算步骤,并通过算例分析其在高速铁路测量应用中的可行性,该投影方法与目前施工单位正在使用的高斯投影相比较具有明显的优点。The controllable range of projection area of the independent coordinates in Gauss Projection which is being used in the High-Speed Railways Surveying presently is too small, so much trouble has been brought in construction. The theory, method and computational process of Slope Mercator Projection along railways are presented after longitude and latitude has been projected on the spherical surface. The feasibility of that in the high-speed railway surveying is analyzed through the experiment data. This method is much more appropriate than Gauss Projection which is being adopt by some construction enterprises in the High-Speed Railways Surveying.

关 键 词：高斯投影 长度变形 球面坐标系 斜墨卡托投影 新极点 球面投影 

分 类 号：P226[天文地球—大地测量学与测量工程]