| HHT在水下目标信号特征提取中的应用 |
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| 引用本文： | 赖思邈,张效民,曹丕.HHT在水下目标信号特征提取中的应用[J].电声技术,2009,33(6):36-40. |
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| 作者姓名： | 赖思邈 张效民 曹丕 |
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| 作者单位： | 西北工业大学,航海学院,陕西,西安,710072 |
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| 摘 要： | 将希尔伯特-黄变换（HHT）用于水下目标特征分析，利用HHT对实录舰船辐射信号进行了特征提取，结果表明其适用于水声非平稳信号的分析，与传统时频分析方法相比具有很强的自适应特性和较好的时频聚集性。
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| 关 键 词： | 希尔伯特-黄变换 固有模态函数 经验模态分解 时频熵 最近邻决策方法 |
Application of HHT in Feature Extraction of Underwater Target Signal |
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| LAI Si-miao,ZHANG Xiao-min,CAO Pi.Application of HHT in Feature Extraction of Underwater Target Signal[J].Audio Engineering,2009,33(6):36-40. |
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| Authors: | LAI Si-miao ZHANG Xiao-min CAO Pi |
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| Affiliation: | College of Marine;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | Hilbert-Huang transform is used for extracting features of underwater target in this paper. The features of recorded ship-radiated signals are extracted with HHT method. The results show that HHT method is suitable to underwater acoustic non-stationary signal analysis,and it has good adaptive and time-frequency concentration characteristics. |
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| Keywords: | Hilbert-Huang transform intrinsic mode function empirical mode decomposition time-frequency entropy nearest classifier method |
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