基于MATLAB的舰船辐射噪声信号小波消噪处理

针对舰船辐射噪声信号的特点提出了小波消噪的方法,对小波消噪理论作了简要的阐述,并设计了一种消噪方案,最后利用MATLAB,在计算机上选用不同的小波基和阈值进行了实船信号的消噪处理试验,并对结果进行了简单的分析比较。试验结果表明,在选择了合适的小波基和阈值的情况下,利用小波变换的方法对舰船辐射噪声进行消噪处理可以取得良好的效果。

Eliminating noise processing of ship-radiated noise signal based on MATLAB

In view of the characters of ships radiated noise signal, a method of wavelet transformation for ship-radiated noise de-nosing is proposed in this article . The theory of wavelet is expounded briefly, and a scheme of eliminating noise is devised. At last, a experiment is done by MATLAB to process the real ship-radiated noise signal, selecting different wavelet base and threshold value, and then a simple analysis and comparison is done on the result. The result proved that we can get a very effective outcome by the method of wavelet transformation if have chose the adaptive wavelet base and threshold value.