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A New De-Noising Algorithm Based on Wavelet Transform
Author(s): 
Pages: 740-743
Year: Issue:  6
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  Hampel滤波器小波变换降噪算法;
Abstract: 提出一种去除观测信号中白噪声的新方法.分析了白噪声和一般信号的小波变换系数的不同特点,对Hampel滤波器进行了改进.利用白噪声和一般信号小波变换系数的不同特点,用改进后的滤波器对信号小波变换系数序列进行滤波处理,从而达到降噪的目的.仿真结果表明,滤波算法对不同种类、不同信噪比的信号有很好的降噪效果,尤其适用于强噪声背景下弱信号的检测.
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