| 水下地形匹配置信度算法与仿真 |
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| 引用本文： | 佟光,查月. 水下地形匹配置信度算法与仿真[J]. 中国惯性技术学报, 2011, 0(5) |
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| 作者姓名： | 佟光 查月 |
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| 作者单位： | 中国人民解放军92941部队95分队; |
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| 摘 要： | 水下地形辅助导航的关键在于地形匹配,匹配定位的一个重要问题就是匹配结果是否可靠。从影响匹配结果的另外一个重要因素地形导航信息量出发,选取了地形高度标准差、信噪比、地形熵、相似度4个特征向量来判定匹配结果的置信度。仿真结果表明,当水下航行器进入地形信息丰富(置信度高)的区域后,地形辅助导航系统可靠性比较高,位置误差从3〞降低到1.5〞以内,为水下航行器导航提供了可靠的位置信息源。
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| 关 键 词： | 水下航行器 地形辅助导航 地形导航信息量 置信度 |
Simulation of confidence algorithm of underwater terrain matching |
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| TONG Guang,CHA Yue. Simulation of confidence algorithm of underwater terrain matching[J]. Journal of Chinese Inertial Technology, 2011, 0(5) |
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| Authors: | TONG Guang CHA Yue |
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| Affiliation: | TONG Guang,CHA Yue(Element 95,Unit 92941 of PLA,Huludao 125001,China) |
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| Abstract: | The key of underwater terrain aided navigation is terrain matching,and the reliability of matches is one of the important issues.Based on the information contents of terrain navigation,four feature vectors,i.e.standard deviation of terrain height,signal to noise ratio,terrain entropy and similarity,are selected to determine the reliability of matches.Simulation results show that when the autonomous underwater vehicle(AUV) enters the terrain information-rich region(which has high reliability),the terrain aid... |
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| Keywords: | autonomous underwater vehicle terrain aided navigation terrain navigation information content confidence degree |
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