Petroleum Science > 2011(3 ) :310-316 DOI:
An application of matching pursuit timefrequency decomposition method using multiwavelet dictionaries Open Access
文章信息
作者:Matching pursuit, seismic attenuation, wavelet transform, Wigner Ville distribution, timefrequency dictionary
作者单位:Zhao Tianzi and Song WeiLibrary of China University of Petroleum, Beijing 102249, China;CNPC Key Laboratory of Geophysical Exploration, China University of Petroleum, Beijing 102249, China
收稿日期:
出版日期:2011-03-24 00:00:00.0
引用方式:
文章摘要
In the time-frequency analysis of seismic signals, the matching pursuit algorithm is an effective tool for non-stationary signals, and has high time-frequency resolution and a transient structure with local self-adaption. We expand the time-frequency dictionary library with Ricker, Morlet, and mixed phase seismic wavelets, to make the method more suitable for seismic signal time-frequency decomposition. In this paper, we demonstrated the algorithm theory using synthetic seismic data, and tested the method using synthetic data with 25% noise. We compared the matching pursuit results of the time-frequency dictionaries. The results indicated that the dictionary which matched the signal characteristics better would obtain better results, and can reflect the information of seismic data effectively.
英文关键词
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Matching pursuit, seismic attenuation, wavelet transform, Wigner Ville distribution, timefrequency dictionary