随机共振技术的水声微弱信号提取算法

Abstract

随机共振技术作为一种新兴的弱信号检测算法,与传统线性滤波的方法相比,它可以检测到更低信噪比的信号.为此尝试将其应用到高频水声通信系统中,结合尺度变换和参数调节两种方法,在低信噪比下取得了一定的性能增益,并讨论了系统与信号达到最佳匹配时共振参数的变化情况.

As a new algorithm of weak signal detection,the stochastic resonance technology,compared with the traditional methods of linear filter,can detect the signal with lower signal-to-noise ratio.Here we apply it to the high frequency of underwater acoustic communication system.Combining with the scale transformation and adjusting parameters methods,the performance of the system achieved certain gain in the low SNR region.Here we also discuss how the result changes when the parameters change,and shows the best conditions that match the system and signal.