信号分析中小波变换基函数选择研究

The Selection of Basis Functions of Wavelet Transform in Signal Analysis

不同的小波基具有不同的时频特征,用不同的小波基分析同一个问题产生的结果会有区别。因此在小波分析应用中就存在了小波基的选取问题。本文详述了小波变换的原理以及选择小波基函数的基本方法,根据不同的应用需要来使用相应的小波基函数。

Different wavelet basis has different frequency characteristics. The result of a question will be different with different wavelet basis. Therefore,the application of wavelet analysis on the selection of wavelet basis is critical. This paper details the principle of wavelet transform and chooses the wavelet basis function, depending on the application needs to use the corresponding wavelet basis function.