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.%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 nonGaussian.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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