| 水中目标水压场信号特征提取与检测研究 |
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| 引用本文： | 姜礼平,龚沈光,张志宏.水中目标水压场信号特征提取与检测研究[J].武汉理工大学学报(交通科学与工程版),2006,30(2):232-234. |
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| 作者姓名： | 姜礼平 龚沈光 张志宏 |
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| 作者单位： | 1. 海军工程大学理学院,武汉,430033
2. 海军工程大学兵器工程系,武汉,430033 |
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| 基金项目： | 海军工程大学校科研和教改项目 |
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| 摘 要： | 利用目标信号功率主要集中在低频部分的特点，用功率谱估计方法提取低频信号的能量作为特征，提出了所谓的浮动阈值方法，对信号滑动地进行目标检测．通过对实验船模水压场信号进行检测验证。讨论了在各种不同情况下，目标信号的特征提取及目标检测方法的效果，验证了该方法的有效性．
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| 关 键 词： | 功率谱估计 特征提取 目标检测 舰船水压场 |
| 收稿时间： | 2005-10-20 |
| 修稿时间： | 2005年10月20 |
Research on Characteristic Extraction and Detection of Underwater Target Signal |
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| Jiang Liping,Gong Shenguang,Zhang Zhihong.Research on Characteristic Extraction and Detection of Underwater Target Signal[J].journal of wuhan university of technology(transportation science&engineering),2006,30(2):232-234. |
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| Authors: | Jiang Liping Gong Shenguang Zhang Zhihong |
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| Institution: | College. of Science ,Naval Univ. of Engineering,Wuhan 430033;Dept. of Weaponry Engineering, Naval Univ. of Engineering, Wuhan 430033 |
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| Abstract: | Based on analyzing target signal and noise signal by power spectrum estimation, a feature extraction method is proposed in this paper. The feature variable consists of energy of lower frequencies signal. The effectiveness of the method is verified by calculation results in detection and characteristic extraction of hydrodynamic pressure fields of ship models. |
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| Keywords: | power spectrum estimation feature extraction target detection ship hydrodynamic pressure fields |
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