| ???????????????????GPS?????? |
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| 引用本文： | 丁海勇,杨延珍,王新志,王晓英.???????????????????GPS??????[J].大地测量与地球动力学,2010,30(6):82-85. |
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| 作者姓名： | 丁海勇 杨延珍 王新志 王晓英 |
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| 作者单位： | 1. 南京信息工程大学遥感学院,南京,210044
2. 山东交通学院土木工程系,济南,250023 |
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| 基金项目： | 南京信息工程大学校科研基金 |
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| 摘 要： | ????GPS????????????????????????????????з????????????????????趨????????????????е???????????????????????棬?????????????е?????????????????????????????????????????????????????????????????У?????н???GPS????????
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| 关 键 词： | ?????????? ???? ????? ??????? ?????? |
GPS HEIGHT TRANSFORMATION BASED ON MOVING SURFACE FITTING |
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| Ding Haiyong,Yang Yanzhen,Wang Xinzhi,Wang Xiaoying.GPS HEIGHT TRANSFORMATION BASED ON MOVING SURFACE FITTING[J].Journal of Geodesy and Geodynamics,2010,30(6):82-85. |
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| Authors: | Ding Haiyong Yang Yanzhen Wang Xinzhi Wang Xiaoying |
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| Institution: | 1)School of Remote Sensing, Nanjing University of Information Science and Technology, Nanjing 2100442)Civil Engineering Department, Shandong Jiaotong University, Jinan 250023 |
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| Abstract: | To improve the accuracy of GPS height transformation from geodetic height to normal height, the moving surface fitting algorithm is presented to fit every sub region. The point whose normal height is unknown is selected as the circle center. Given the original value of the region semi diameter, a conicoid is fitted by use of the known points in the region. For the ill posed equations appeared during the surface fitting, ridge estimation algorithm is used to improve the accuracy of parameter estimation. Some numerical experiments show the feasibility and higher accuracy of moving surface fitting algorithm by compared with other methods |
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| Keywords: | moving surface fitting geodetic height elevation anomaly ill posed equation normal height |
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