Toggle Main Menu Toggle Search

Open Access padlockePrints

Novel statistical approach to blind recovery of earth signal and source wavelet using independent component analysis

Lookup NU author(s): Aws Al-Qaisi, Dr Wai Lok Woo, Professor Satnam Dlay

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Abstract

This paper provides a new statistical approach to blind recovery of both earth signal and source wavelet given only the seismic traces using independent component analysis (ICA) by explicitly exploiting the sparsity of both the reflectivity sequence and the mixing matrix. Our proposed blind seismic deconvolution algorithm consists of three steps. Firstly, a transformation method that maps the seismic trace convolution model into multiple inputs multiple output (MIMO) instantaneous ICA model using zero padding matrices has been proposed. As a result the nonzero elements of the sparse mixing matrix contain the source wavelet. Secondly, whitening the observed seismic trace by incorporating the zero padding matrixes is conducted as a pre-processing step to exploit the sparsity of the mixing matrix. Finally, a novel logistic function that matches the sparsity of reflectivity sequence distribution has been proposed and fitted into the information maximization algorithm to obtain the demixing matrix. Experimental simulations have been accomplished to verify the proposed algorithm performance over conventional ICA algorithms such as Fast ICA and JADE algorithm. The mean square error (MSE) of estimated wavelet and estimated reflectivity sequence shows the improvement of proposed algorithm.


Publication metadata

Author(s): Al-Qaisi A, Woo WL, Dlay SS

Publication type: Article

Publication status: Published

Journal: WSEAS Transactions on Signal Processing

Year: 2008

Volume: 4

Issue: 4

Pages: 231-240

Print publication date: 01/04/2008

ISSN (print): 1790-5022

ISSN (electronic):


Share