| 关于地形复杂地区地形改正的FTT算法 |
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| 引用本文： | 吴黎明.关于地形复杂地区地形改正的FTT算法[J].武汉大学学报(信息科学版),1992(4). |
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| 作者姓名： | 吴黎明 |
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| 摘 要： | 大面积地形改正的快速计算,对现代大地测量实践具有重大意义,尤其是在那些地形复杂地区。本文通过理论分析选出了一种适于此类地区地形改正计算的FFT算法,并给出了用于实际计算的数学模型。试算结果表明,该模型用于特大山区能够获得与双三次样条棱柱算法精度相当的结果。
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| 关 键 词： | 地形复杂地区 地形改正 FFT |
On the FFT Method of Terrain Corretion Computation in Rough Mountain Areas |
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| Wu Liming.On the FFT Method of Terrain Corretion Computation in Rough Mountain Areas[J].Geomatics and Information Science of Wuhan University,1992(4). |
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| Authors: | Wu Liming |
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| Abstract: | The fast computation of terrain correction in a large area is significant for modern geodetic practice, especially in rough mountain areas. In this paper one FFT method of terrain correction computation is seleted for this kind of areas through theoretic analysing and a mathmatic model for practical application is proposed. The computation experiment shows that the results caculated by this model are as accurate as those caculated by bicubie spline prism method in extremely rough mountain areas. |
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| Keywords: | rough mountain area terrain correction FFT |
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