| 基于复数小波变换的三维地形轮廓匹配算法 |
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| 引用本文： | 刘汉周,刘永才,胡万海,田金文. 基于复数小波变换的三维地形轮廓匹配算法[J]. 战术导弹技术, 2007, 0(3): 69-73 |
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| 作者姓名： | 刘汉周 刘永才 胡万海 田金文 |
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| 作者单位： | [1]华中科技大学,武汉430074 [2]中国航天科工集团公司第三研究院,北京100074 |
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| 摘 要： | 针对地形特征对方向选择具有差异性的特点，提出了一种新的三维地形轮廓匹配算法．利用复数小波变换的六个可分的正负方向频带，提取地形六个不同方向的特征信息．在不同尺度下，通过六个带通复值分量，实现了由粗到精的金字塔式分层匹配．最后，仿真结果表明，合理选取匹配策略后，该算法具有较强的鲁棒性和较好的快速性．
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| 关 键 词： | 小波变换 复数小波 地形匹配 方向选择性 |
| 文章编号： | 1009-1300（2007）03-0069-05 |
| 修稿时间： | 2005-08-03 |
An Algorithm of 3D-TERCOM Based on Complex Wavelet Tansform |
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| Liu Hanzhou,Liu Yongcai,Hu Wanhai,Tian Jinwen. An Algorithm of 3D-TERCOM Based on Complex Wavelet Tansform[J]. Tactical Missile Technology, 2007, 0(3): 69-73 |
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| Authors: | Liu Hanzhou Liu Yongcai Hu Wanhai Tian Jinwen |
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| Affiliation: | 1. HuaZhong University of Science and Technology, Wuhan 430074, China; 2. The Third Research Academy, CASIC, Beijing 100074, China |
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| Abstract: | A new algorithm of 3D-TERCOM is proposed for the diversity of terrain feature to directional selectivity. With six separable frequency bands of positive direction and negative direction tansformed by complex wavelet, six different feature information of terrain can be extracted. Under different scales, six complex subbands implement pyramid-style matching strategy from coarse level to fine level. Finally, the results prove that the method with reasonable similarity criterion has advantages of strong robustness and high operation efficiency. |
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| Keywords: | wavelet transform complex wavelet terrain contour matching directional selectivity |
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