一种适用于沪杭磁悬浮工程的坐标系  

Geodetic Coordinate System Suitable for Shanghai-Hangzhou Magnetic Suspension Project

作　　者：施一民[1] 罗彦[1] 

机构地区：[1]同济大学测量与国土信息工程系

出　　处：《西南交通大学学报》2007年第2期143-147,共5页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(40471114)

摘　　要：为更好地满足沪杭磁悬浮工程全线施工定线的需要,提出了引用一种新型大地坐标系的设想．该坐标系仍以经纬线构成椭球面上的坐标格网,但点位则用长度量表示．由此不仅可统一全线用于施工定线的坐标系,而且能杜绝投影变形,方便而精确地求解长度和角度,这已由计算结果所证实．In order to satisfy the requirement for the route location of the Shanghai-Hangzhou magnetic suspension project, a new form of geodetic coordinate system was proposed. This geodetic coordinate system is defined by meridians and parallel circles, but with two coordinate parameters expressed by length. As a result, the coordinate systems for the route location along with the whole line can be unified, and the precision of lengths and angles obtained from simple formulas based on the new form of geodetic coordinate system is very high and there is not any map projection distortion. The above conclusions have been proved by calculational resuhs for the project.

关 键 词：沪杭磁悬浮工程 新型大地坐标系 大地主题反解 椭球面 

分 类 号：P226.3[天文地球—大地测量学与测量工程]