Application of Hilbert-Huang transform in time-frequency analyisis of array acoustic signals

  • WANG Chunlian ,
  • HOU Zhongjian ,
  • LIU Lihong
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  • College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China

Online published: 2010-03-15

Abstract

Array acoustic logging signal is a non-linear and non-stationary signal. Hilbert-Huang transform(HHT) is a new method developed for non-linear and non-stationary signal. The key step of this method is to apply the empirical mode decomposition (EMD)on signal, decomposing the signal into several intrinsic mode functions (IMF), and then time-frequency spectrum of the signal can be obtained. The HHT is applied to array acoustic logging signal processing, and EMD is used to decompose the signal into several IMF, and then the smooth pseudo Wigner-Ville distribution is obtained. Through the analysis, the difference between the water bearing layer and dry layer can be obtained.

Cite this article

WANG Chunlian , HOU Zhongjian , LIU Lihong . Application of Hilbert-Huang transform in time-frequency analyisis of array acoustic signals[J]. Lithologic Reservoirs, 2010 , 22(1) : 93 -97 . DOI: 10.3969/j.issn.1673-8926.2010.01.017

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