Denoise of Wavelet Domain Threshold Value Seismic Data by Multi-Wavelet Transform

Abstract

Abstract: Followed the analysis of conventional denoising method by threshold filter on wavelet domain, a seismic data denoising method by threshold filter on wavelet domain based on multi-wavelet transform is proposed. Based on the feature difference between signal and noise on multi-measure domain in wavelet transform, processing the wavelet coefficients in the different measures with thresholds filter, multi-wavelet transform can be improved without losing original signals. Seismic data simulation and practical processing indicate that this method can be used to press random interferences and effectively improve the signal-noise ratio and the resolution of seismic data.

Key words: seismic wave, interference, noise, signal, resolution

CLC Number:

P631.443

XU Wei-xiu, YUE Ji-guang, WU Ji-wei, XIAO Yun-shi. Denoise of Wavelet Domain Threshold Value Seismic Data by Multi-Wavelet Transform[J]. Xinjiang Petroleum Geology, 2007, 28(6): 764-767.

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