| 基于高阶谱的舰船噪声特征提取与实验 |
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| 引用本文： | 陈雪俫.基于高阶谱的舰船噪声特征提取与实验[J].舰船科学技术,2011,33(3). |
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| 作者姓名： | 陈雪俫 |
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| 作者单位： | 海军兵种指挥学院,广州,广东,510430 |
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| 摘 要： | 利用高阶谱对舰船辐射噪声进行了分析,着重研究了采用双谱分析的方法提取舰船噪声特征,给出了维谱特征提取的算法,提取了9维的特征向量并利用神经网络进行了训练与识别.实验表明,该方法对舰船辐射噪声信号具有很好的分类效果.
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| 关 键 词： | 特征提取 双谱 维谱 神经网络 |
Ship-radiated noise extraction and experiment investigation based on higher order spectrum |
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| CHEN Xue-lai.Ship-radiated noise extraction and experiment investigation based on higher order spectrum[J].Ship Science and Technology,2011,33(3). |
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| Authors: | CHEN Xue-lai |
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| Institution: | CHEN Xue-lai(Naval Arms Command Institute,Guangzhou 510430,China) |
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| Abstract: | In order to correctly recognize the signal of ship-radiated noise,the method of feature extraction on higher order spectrum is presented.The noises always takes on apparent nonlinearity and non-Gaussian.Therefore,bispectrum is used to extract the feature of ship-radiated noise.Based on the higher order spectrum of the ship noise,the energy distribution of diagonal slices are extracted as the characteristics.By using the back-propagation artificial neural networks,fine results have been obtained. |
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| Keywords: | feature extraction bispectum 112 bispectum neural networks |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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