| 基于小波包熵的船舶轴频电场信号检测 |
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| 引用本文： | 胡鹏,龚沈光,胡英娣.基于小波包熵的船舶轴频电场信号检测[J].华中科技大学学报(自然科学版),2011,39(11):15-18. |
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| 作者姓名： | 胡鹏 龚沈光 胡英娣 |
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| 作者单位： | 海军工程大学兵器工程系,湖北武汉,430033 |
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| 基金项目： | 水中军用目标特性国防重点实验室基金资助项目(5144407105JB11) |
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| 摘 要： | 为了有效地从海洋环境电场背景中检测微弱的船舶轴频电场信号,提出了一种基于小波包熵的船舶轴频电场信号检测算法.首先使用小波包变换对测量信号进行多层分解并计算最后一层各结点的重构信号;然后计算各结点重构信号的小波包熵;最后选取小波包熵最小的重构信号作为检测信号进行滑动功率谱检测.通过实测数据和仿真数据对该算法和滑动功率谱算...
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| 关 键 词： | 轴频电场 小波包熵 小波包变换 重构信号 检测 |
Detection of ship shaft-rate electric field signals using wavelet packet entropy |
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| Hu Peng Gong Shenguang Hu Yingdi.Detection of ship shaft-rate electric field signals using wavelet packet entropy[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011,39(11):15-18. |
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| Authors: | Hu Peng Gong Shenguang Hu Yingdi |
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| Institution: | Hu Peng Gong Shenguang Hu Yingdi(Department of Weaponry Engineering,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | In order to effectively detect the weak signals from ocean environmental electric field,a detection algorithm of ship shaft-rate electric signal based on wavelet packet entropy was proposed.Firstly,wavelet packet transform was used to decompose the received signal into several nodes and the reconstructed signals of each node in the last layer were got.Then,the wavelet packet entropy of each reconstructed signal was calculated.Finally,the reconstructed signal with minimum wavelet packet entropy was selected ... |
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| Keywords: | shaft-rate electric field wavelet packet entropy wavelet packet transform reconstructed signal detection |
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