摘要
在水声通信信号降噪中,水声信号频率成分复杂且动态变化,难以精确地去噪。为此,提出基于改进EMD-小波包的水声通信信号降噪方法。采集水声通信信号,利用改进后的EMD技术对噪声信号进行分解,获得IMF分量;应用小波包变换对每个IMF分量进行降噪处理,针对性地去除IMF分量的噪声。最后,通过重构处理后的信号分量,输出降噪后的水声通信信号。结果表明,该降噪方法能够有效提升信噪比,提升信号降噪效果。
In underwater communication signal denoising,the frequency components of underwater signals are complex and dynamically changing,making it difficult to accurately denoise.Therefore,a denoising method for underwater acoustic communication signals based on improved EMD wavelet packet is proposed.Collect underwater acoustic communication signals,use improved EMD technology to decompose noise signals,and obtain IMF components;Apply wavelet packet transform to denoise each IMF component and remove noise from IMF components in a targeted manner.Finally,by reconstructing the processed signal components,output the denoised underwater acoustic communication signal.The results indicate that this denoising method can effectively improve the signal-to-noise ratio and enhance the signal denoising effect.
作者
龙红梅
刘茜
刘园
胡延伟
LONG Hongmei;LIU Qian;LIU Yuan;HU Yanwei(NanChong Vocational And Technical College Sichaun nanchong 637131,China)
出处
《长江信息通信》
2025年第4期179-181,共3页
Changjiang Information & Communications
关键词
改进EMD-小波包
水声通信信号
水声通信信号降噪
改进EMD
小波包降噪
improve EMD-wavelet packet
underwater acoustic communication signal
noise reduction of underwater acoustic communication signal
improve EMD
wavelet packet noise reduction
