Broadband underwater target echo detection based on signal spectral irregularity feature

作     者：Chen Yunfei Li Sheng Jia Bing Wang Zhenshan Li Guijuan 陈云飞;黎胜;贾兵;王振山;李桂娟

作者机构：School of Naval ArchitectureDalian University of TechnologyDalian 116024China Science and Technology on Underwater Test and Control LaboratoryDalian 116013China 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2018年第34卷第2期

页      面：147-155页

核心收录：

学科分类：082403[工学-水声工程] 08[工学] 0824[工学-船舶与海洋工程] 

基　　金：The 13th Five-Year Plan for Advanced Research Program(No.41416030301) 

主　　题：echo reverberation signal spectral irregularity 

摘      要：For the detection of underwater target echo under strong interferences,the modulation feature of direct echo signal and reverberation spectrum are characterized by the signal spectral irregularity feature,and the relationship between signal spectral irregularity and target physical properties is theoretically formed.A novel method of broadband underwater target echo detection under reverberation based on the signal spectral irregularity characteristics is *** proposed method has the capability of discriminating between the direct target echo signal from *** results of complex underwater target broadband acoustic scattering show that the echo can be detected even with the signal to reverberation ratio(SRR)below-10 dB by the proposed method based on the spectral irregularity(SI)*** corresponding sea experimental results also show that echo can be detected when the SRR is below 0 *** effectiveness and correctness of the proposed method are verified both in simulated data and in real data in sea experiment.