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小波变换具有良好的局部化时频特性，利用小波变换可以很方便地将地震记录分解成不同的频道，分解后的各频道存在内在的分形规律。本文研究表明，其各频道的地震包络具有很好的分形自相似性，在一定的尺度范围内，利用已有的频率通道就可外推高频，提高地震资料的分辨率。
Wavelet transform has good localized time-frequency characteristics. Using wavelet transform, seismic records can be easily decomposed into different channels, and the fractal rules have intrinsic fractal. This study shows that the seismic envelopes of each channel have a good fractal self-similarity. Within a certain range of scales, the existing frequency channels can be used to extrapolate high-frequency and improve the resolution of seismic data.