小波分析在信号消噪中的应用

The application of wavelet analysis in noise eliminating of signal

对小波分析和小波包的基本理论进行了简单介绍,详细分析了基于小波分析和小波包对信号进行消噪的处理技术,并利用MATLAB分别进行了计算机模拟,最后分析、比较了各种消噪方法的效果和优缺点,并结合理论分析和模拟结果讨论了阈值的选取方法和原则。通过本文的分析和模拟结果,我们可以看出,小波分析在信号的消噪中具有独特的优势,并且具有广阔的应用前景。

This paper introduces the basic theory of wavelet analysis and wavelet packet, then labors the technologies of noise eliminating of signal with wavelet analysis and wavelet packet, and makes use of Matlab for simulation. At last,analyses and compares the effects and advantages of the both methods,and discusses the principle and measure of threshold selection. Through the results of analysis and simulation, we can deduce that wavelet analysis have the particular advantage in noise eliminating of signal and have wide application foreground.