摘要
ＤＪ小波ＶｉｓｕＳｈｒｉｎｋ去噪法在数字信号处理方面的应用已十分广泛，但是去噪后恢复信号质量的优劣与低分辨率截断参数ｊ０的选取是密切相关的，而ｊ０的选取又与被污染信号的噪声指数σ以及采样率有关。这篇文章对这些关系进行了分析，并给出了仿真计算的结果，分析与计算的结论对如何选取最佳低分辨率截断参数ｊ０具有一定的指导意义。
The method of DJ's VisuShrink denoising has been applied widely in degital signal processing.But the quality of the signal restored from noise is related to the parameter j 0,the low resolution cutoff,and that the selecting of j 0 is related to the noise power σ of a signal corrupted by an additive noise and the sampling rate of the signal.This article analyzes these relationships among these parameters and gives many simulation results.These results have significant meanings in selecting the parameter j 0.
出处
《国防科技大学学报》
EI
CAS
CSCD
1998年第6期102-108,共7页
Journal of National University of Defense Technology
