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Image source detection for geoacoustic inversion by Teager-Kaiser energy operator

Article dans une revue avec comité de lecture
Author
DRIRA, Achraf
13094 Institut de Recherche de l'Ecole Navale [IRENAV]
GUILLON, Laurent
ccBOUDRAA, Abdel-Ouahab
13094 Institut de Recherche de l'Ecole Navale [IRENAV]

URI
http://hdl.handle.net/10985/8681
DOI
10.1121/1.4874235
Date
2014
Journal
Journal of the Acoustical Society of America

Abstract

This letter presents an improvement of the image source method (ISM) for geoacoustic inversion. The new algorithm is based on the Teager-Kaiser Energy Operator which ampli es the discontinuities in signals while the soft transitions are reduced. This property is exploited for accurate detection of time arrivals and thus for location of the image sources. The e ectiveness of the method is shown on both synthetic and real data and the inversion results are, overall, in good agreement with ground truth and other inversion results with a signi cant reduction of computation time.

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