GPS高程转换的新方法研究 |
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引用本文: | 游为,;范东明,;付淑娟,;龙小林,;龚志强. GPS高程转换的新方法研究[J]. 工程勘察, 2009, 0(3): 60-63 |
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作者姓名: | 游为, 范东明, 付淑娟, 龙小林, 龚志强 |
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作者单位: | [1]西南交通大学土木工程学院,成都610031; [2]中交隧道工程局有限公司,北京100010 |
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基金项目: | 地球空间环境与大地测量教育部重点实验室测绘基础研究基金(04-01-02);西南交通大学校基金(2004B17). |
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摘 要: | 提出了一种在“移去-恢复”思路的基础上,综合利用EIGEN—GL04C地球重力场模型、局部地形改正以及几何拟合法进行GPS高程转换的方法。验证了EIGEN-GL04C模型的精度,比较了现有的几种局部地形改正公式,并通过某隧道实例验证了该方法的有效性和严密性,证明该方法在地形起伏较大的重山区同样能够达到较好的精度要求。
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关 键 词: | EIGEN-GL04C地球重力场模型 局部地形改正 移去-恢复 GPS高程转换 |
Studying of new method for GPS height transformation |
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Affiliation: | You Wei , Fan Dongming , Fu Shujuan , Long Xiaolin , Gong Zhiqiang (1. School of Civil Eng., Southwest Jiaotong University, Chengdu 610031, China; 2. Tunnel Construction Engineering Company Ltd., Beijing 100010, China) |
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Abstract: | A GPS height transformation method by Remove-Restore idea, using EIGEN-GL04C EGM, local topographic correction and geometry method is presented in this paper. It verified the precision of EIGEN-GL04C EGM and compared some formulae of current local topographic correction. Besides, a case study of tunnel project is given to show that the proposed method is useful and effective. The algorithm is also proved to get good precision in mountain area of rugged topography. |
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Keywords: | EIGEN-GL04C EGM local topographic correction remove-restore GPS height transformation |
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