基于小波变换的水声连续波信号去噪研究  

Research on Denoising of Underwater Acoustic Continuous Wave Signals Based on Wavelet Transform

作　　者：代伟 DAI Wei(No.92765 Troops of PLA,Baoting 572316)

机构地区：[1]92765部队,保亭572316

出　　处：《舰船电子工程》2024年第12期178-182,204,共6页Ship Electronic Engineering

摘　　要：水声连续波信号是水下通信、导航和定位等水声工程中常用的一种信号,水声信号在水下进行传输的过程中会受到噪声的干扰,如何将水声信号中的噪声滤除是水声信号处理中的一个重要的课题。论文首先设计了连续波信号,然后根据水声信道的实际情况计算了海洋环境噪声的Wenz谱噪声和舰船辐射噪声,让实际的信号和噪声混合得到水听器接收的实际信号,再利用小波变换的方法将噪声滤除,得到最终的信号,从计算结果可以看出这种方法的有效性。Underwater acoustic continuous wave signal is a common signal used in the underwater acoustic engineering of the underwater navigation and location and communication.The signals will be interfered by noises during the transmission under water,how to filter the noises mixed in the signals is an important question for study or discussion in the underwater acoustic signal process.Firstly,the continuous wave signal is designed in this manuscript.Then the marine environment Wenz spectral noise and ship radia⁃tion noise are researched according to the real underwater acoustic channel.The continuous wave signal and the noises are mixed as the received signals of hydrophone.After that the last needed signal is obtained by filtering the noise in the mixed signal using the wavelet transform method.The results show this method is effective in the denoising of underwater acoustic signal.

关 键 词：连续波信号 Wenz谱噪声 舰船辐射噪声 小波变换 

分 类 号：TB566[交通运输工程—水声工程]