A comparative study of four nonlinear dynamic methods and their applications in classification of ship-radiated noise  

作　　者：Yu-xing Li Shang-bin Jiao Bo Geng Qing Zhang You-min Zhang 

机构地区：[1]School of Automation and Information Engineering,Xi’an University of Technology,Xi’an,710048,China [2]Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing,Xi’an University of Technology,Xi’an,710048,China [3]Department of Mechanical,Industrial and Aerospace Engineering,Concordia University,Montreal,Quebec H3G 1M8,Canada

出　　处：《Defence Technology（防务技术）》2022年第2期183-193,共11页Defence Technology

基　　金：supported by National Natural Science Foundation of China(No.61871318 and 61833013);Shaanxi Provincial Key Research and Development Project(No.2019GY-099).

摘　　要：Refined composite multi-scale dispersion entropy(RCMDE),as a new and effective nonlinear dynamic method,has been applied in the field of medical diagnosis and fault diagnosis.In this paper,we first introduce RCMDE into the field of underwater acoustic signal processing for complexity feature extraction of ship radiated noise,and then propose a novel classification method for ship-radiated noise based on RCMDE and k-nearest neighbor(KNN),termed RCMDE-KNN.The results of a comparative experiment show that the proposed RCMDE-KNN classification method can effectively extract the complexity features of ship-radiated noise,and has better classification performance under one and two scales than the other three classification methods based on multi-scale permutation entropy(MPE)and KNN,multi-scale weighted-permutation entropy(MW-PE)and KNN,and multi-scale dispersion entropy(MDE)and KNN,termed MPE-KNN,MW-PE-KNN,and MDE-KNN.It is proved that the RCMDE-KNN classification method for ship-radiated noise is feasible and effective,and can obtain a very high recognition rate.

关 键 词：Nonlinear dynamic Refined composite multi-scale dispersion entropy(RCMDE) Multi-scale dispersion entropy(MDE) Multi-scale weighted-permutation entropy (MW-PE) Multi-scale permutation entropy(MPE) Classification of ship-radiated noise 

分 类 号：U661.44[交通运输工程—船舶及航道工程]