一种基于小波变换模极大值的雷达信号噪声去除方法

An Denoising Method for Radar Signals Based on Wavelet Transform Coefficient Maxima

本文在Mallat的模极大值去除噪声的算法基础上 ,给出了一种在小波变换模极大值域进行自动滤波的算法。该算法在小波变换模极大值空间中 ,可自动识别信号和噪声 ,并自动去除对应噪声的模极大值 ,以达到去噪的目的。将该算法应用于雷达散射波信号的噪声去除 ,试验验证 ,其对白噪声和时间抖动噪声的抑制较好。

This paper gives out an automatic algorithm which is based on WT (Wavelet Transform) coefficient maxima. This algorithm can distinguish signals with noises at WT maxima plane and remove that maxima corresponding to noises automatically. It is used for the noise removing for radar scattered signal, the experiment results show that the algorithm can remove both of white noises and time jittered noises valid.