The feature extraction of ship radiated noise with Fourth Order Cumulant diagonal slice

• 来源期刊: 声学学报（英文版）
• 年，卷（期）: 2004,（2）
• 页码范围: 180-192
• 页数: 13页
• 语种: 英文

摘要

After analyzed Fourth Order Cumulant (FOC) of harmonic signals theoretically, the FOC is divided into three parts. The first is the cubic frequency (phase) coupling components.The second is the double frequency (phase) coupling components (ω1 + ω2 = ω3 + ω4). The last is the rest components. On the basis of the study, the FOC diagonal slice is used to extract the cubic frequency (phase) coupling feature, double frequency (phase) coupling feature and the "sub-band energy" feature of ship-radiated noise. In terms of the fea tures, the three type ships are classified by artificial neural network. The correct classification rates of A, B and C ships are 92.5%, 92.7%, 88.6%, respectively. The results show the method is effective and practical.