| 地形匹配辅助导航中的地形独特性分析 |
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| 引用本文： | 吴尔辉,沈林成,常文森.地形匹配辅助导航中的地形独特性分析[J].国防科技大学学报,1998,20(3):5-8. |
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| 作者姓名： | 吴尔辉 沈林成 常文森 |
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| 作者单位： | 国防科技大学自动控制系 |
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| 摘 要： | 本文提出了一种用于地形匹配辅助导航系统中地形独特性分析方法。该方法从地形匹配的物理模型出发，定义了描述局部地形独特性的一个概率向量，在此基础上，给出了地形独特性的熵度量方法。分析和仿真实验表明，地形熵越小，地形就越独特，地形匹配区的可导航性就越好。
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| 关 键 词： | 飞行器，地形匹配，信噪比，熵 |
| 收稿时间： | 1997/10/20 0:00:00 |
Terrain Uniqueness Analysis in Terrain Contour Matching |
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| Wu Erhui,Shen Lincheng and Chang Wensen.Terrain Uniqueness Analysis in Terrain Contour Matching[J].Journal of National University of Defense Technology,1998,20(3):5-8. |
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| Authors: | Wu Erhui Shen Lincheng and Chang Wensen |
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| Affiliation: | Department of Automatic Control, NUDT, Changsha, 410073;Department of Automatic Control, NUDT, Changsha, 410073;Department of Automatic Control, NUDT, Changsha, 410073 |
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| Abstract: | This paper presents an approach to terrain uniqueness analysis in terrain contour matching. The approach, based on the physical model of terrain contour matching, defines a probability vector to describe the local terrain uniqueness and thus provides a way to measure terrain uniqueness via entropy. From analysis and computer simulation, the paper concludes that the lower the terrain entropy, the better the terrain uniqueness and the higher the performance of terrain contour matching. |
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| Keywords: | aircraft terrain contour matching signal to noise ratio entropy |
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