| 利用大地坐标计算真方位角的两种方法 |
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| 引用本文： | 季凯敏,;王解先. 利用大地坐标计算真方位角的两种方法[J]. 工程勘察, 2009, 0(4): 84-86 |
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| 作者姓名： | 季凯敏, 王解先 |
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| 作者单位： | [1]同济大学测量系,上海200092; [2]现代工程测量国家测绘局重点试验室,上海200092 |
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| 摘 要： | 工程应用中，经常需要真方位角进行定位或导航。本文介绍了利用大地坐标计算真方位角的两种方法。一种是将大地坐标经Guass投影反算得到坐标方位角，加上改正得到真方位角；另一种是通过站心地平坐标系直接得到真方位角。文章通过算例验证，两种方法得到的结果一致。
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| 关 键 词： | 真方位角 高斯投影 站心地平坐标系 |
Two ways of calculating true azimuth by geodetic coordinates |
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| Affiliation: | Ji Kaimin, Wang Jiexian ( 1. Dept. of Surveying and Geo - informatics Engineering, Tonal University, Shanghai 200092, China ; 2. Key Lab. of Advanced Surveying Engineering of SBSM, Shanghai 200092, China ) |
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| Abstract: | The true azimuth is very useful in engineering orientation or navigation. In this paper, two methods of calculating true azimuth from geodetic coordinates are given. One is to compute the coordinate azimuth through transforming geodetic coordinates to Gauss plane coordinates, and then adding the correlative corrections. The other one is to obtain the true azimuth in topocentri coordinate system directly with the station local coordinate frame. The testing showed that the results of two models are consistent. |
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| Keywords: | true azimuth Gauss projection the station local coordinate frame |
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