基于峰度-小波包分析的雷达信号去噪方法

摘要

对雷达回波弱信号的检测能力是体现雷达侦察性能的重要指标.根据高斯分布信号的峰度为零的特性,以及结合小波包的多分辨率分析原理,提出利用峰度-小波包分析的弱信号去嗓方法.通过仿真表明,方法对于雷达回波弱信号具有良好的去噪能力,并保证原信号的特征.%The ability of weak signal detection is a important performance index in radar system. A denoising method for radar weak signal using kurtosis-wavelet packet can be proposed in this paper,because of the kurtosis value of Gaussian process that is theoretically equal to zero, and the wavelet packet's function of multiresolution analysis. The results of MATLAB simulation show that the method has an excellent denoising performance for the weak echo signal of radar, and keeps the characteristics of the signal.