小波变换用于地震测井信号的多分辨率分析

Application of wavelet transform to multiresolution analysis of seismic and log signals

本文讨论了短时窗傅里叶变换时频分辨率的缺点，介绍了小波变换的基本概念及多分辨率分析方法，然后利用小波变换的多分辨率特性对地震和测井信号进行了时频分析和处理。实验结果表明，小波变换的多分辨率分析对于分析处理具有时变谱特性的非平稳信号是一种新的有效方法。

The paper analyses the deficiencies of time-frequency resolution in short window time Fourier transform,and sketches out both wavelet transform concept and multiresolution analysis. Multiresolution property of wavelet transform is then used to make the time-frequency analysis and processing of seismic and log signals. Experiments show that the multiresolution analysis of wavelet transform is an effective new method for processing unstable signals having time variant spectra.