Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (5): 1523-1529.doi: 10.13278/j.cnki.jjuese.201505301

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Local Plane Wave Decomposition Methods in Different Domain

Gao Cheng1,2, Sun Jianguo1,2   

  1. 1. GeoExploration of Science and Technology, Jilin University, Changchun 130026, China;
    2. Laboratory for Integrated Geophysical Interpretation Theory, Ministry of Land and Resources, Changchun 130026, China
  • Received:2014-12-23 Published:2015-09-26

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Abstract:

To disclose the influence of the efficiency and the precision of the local plane wave decomposition method on Gaussian beam migration, we analyze three local plane wave decomposition methods in time domain, frequency domain, and frequency-wavenumber domain, and deduce the formulae of these three methods. The comparison of computational accuracy and efficiency are showed based on the characters of the local plane wave decomposition in different domains. The comparative analysis indicates that the local plane wave decomposition in frequency-wavenumber domain is not only more accurate but also more efficient, and can provide precise data for migration.

Key words: local plane wave decomposition, time domain, frequency domain, frequency-wavenumber domain

CLC Number: 

  • P631.4

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