| 一种适用于沪杭磁悬浮工程的坐标系 |
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| 引用本文： | 施一民,罗彦.一种适用于沪杭磁悬浮工程的坐标系[J].西南交通大学学报,2007,42(2):143-147. |
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| 作者姓名： | 施一民 罗彦 |
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| 作者单位： | 1. 同济大学测量与国土信息工程系,上海,200092;现代工程测量国家测绘局重点实验室,上海,200092
2. 同济大学测量与国土信息工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目（40471114） |
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| 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.
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| 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 |
| 文章编号： | 0258-2724（2007）02-0143-05 |
| 修稿时间： | 2006-09-27 |
Geodetic Coordinate System Suitable for 1Shanghai-Hangzhou Magnetic Suspension Project |
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| SHI Yimin,LUO Yan.Geodetic Coordinate System Suitable for 1Shanghai-Hangzhou Magnetic Suspension Project[J].Journal of Southwest Jiaotong University,2007,42(2):143-147. |
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| Authors: | SHI Yimin LUO Yan |
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| Institution: | 1. Dept. of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Modem Engineering Surveying, State Bureau of Surveying and Mapping, Shanghai 200092, China |
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| Abstract: | 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. |
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| Keywords: | Shanghai-Hangzhou magnetic suspension project new form of geodetic coordinate system inverse solution of geodesic problem ellipsoidal surface |
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