A study on feature extraction and application for ship radiated noise&rsquo;s generalized multiscale mathematical morphology feature

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (4) : 21-28.

A study on feature extraction and application for ship radiated noise’s generalized multiscale mathematical morphology feature

GUO Zheng1,2，ZHAO Mei1，HU Changqing1，NI Junshuai1,2

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Abstract

In order to extract effective features of ship radiated noise in a complex underwater acoustic environment stably, a nonlinear ship radiated noise feature extraction method named generalized multiscale pattern erosion spectrum entropy (GMPESE) was proposed based on mathematical morphology. With processing the ship radiated noise of Qiandao Lake and East China Sea, GMPESE method’s feasibility in different environments was verified, the influence of parameters’ selection on features’ discrimination was analyzed, the recognition performances of GMPESE method and multiscale sample entropy (MSE) method were also compared. Considering time-consuming, the signal duration required to extract stable features and the accuracy of target ship recognition in complex environments, the data processing results show that GMPESE feature extraction method performs better.

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ship radiated noise / feature extraction / mathematical morphology / nonlinear

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GUO Zheng1,2，ZHAO Mei1，HU Changqing1，NI Junshuai1,2. A study on feature extraction and application for ship radiated noise’s generalized multiscale mathematical morphology feature[J]. Journal of Vibration and Shock, 2022, 41(4): 21-28

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