利用经验模态分解-最小均方算法进行舰船辐射噪声仿真信号线谱分析

The decomposition of LMS algorithm for signal spectrum analysis of ship radiated noise simulation using empirical mode

舰船等海上作业平台会产生各种各样的振动,这些船体上的振动以辐射的方式传入海水中,形成舰船辐射噪声,分析和提取舰船辐射噪声信号在军事领域和海洋探测领域等具有重要意义。本文在小波变换处理噪声信号的基础上,利用经验模态分解-最小均方算法对舰船辐射噪声进行仿真信号线谱分析,取得良好的降噪效果。

The vibration of various ships offshore platform will produce the vibrations of the ship to the way of radiation into the sea, this is the ship radiated noise, signal analysis and extraction of ship radiated noise is of great significance in the military field and the field of marine exploration etc. Based on the noise signal processing of wavelet transform,through the analysis of the decomposition LMS algorithm to simulate signal line spectrum of ship radiated noise using empirical mode, and achieved a good noise reduction effect.