Image source detection for geoacoustic inversion by Teager-Kaiser energy operator
Article dans une revue avec comité de lecture
Date
2014Journal
Journal of the Acoustical Society of AmericaAbstract
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.
Files in this item
Collections
Related items
Showing items related by title, author, creator and subject.
-
Communication avec acteDREO, Richard; BOUFFAUT, Léa; GUILLON, Laurent; LABAT, Valérie; BARRUOL, Guilhem; BOUDRAA, Abdel-Ouahab (2017)While visual survey of whales requires substantial means for limited areas, passive acoustic monitoring (PAM) offers larger scale coverage for long periods and less costs. It usually provides information about species ...
-
Article dans une revue avec comité de lectureKHALDI, Kais; BOUDRAA, Abdel-Ouahab (IET, 2012)In this letter a new signals coding framework based on the Empirical Mode Decomposition (EMD) is introduced. The EMD breaks down any signal into a reduced number of oscillating components called Intrinsic Modes Decomposition ...
-
Article dans une revue avec comité de lectureBOUFFAUT, Léa; DRÉO, Richard; LABAT, Valérie; BOUDRAA, Abdel-Ouahab; BARRUOL, Guilhem (Acoustical Society of America, 2018)As a first step to Antarctic blue whale (ABW) monitoring using passive acoustics, a method based on the stochastic matched filter (SMF) is proposed. Derived from the matched filter (MF), this filter-based denoising method ...
-
Antarctic Blue Whale Calls Detection Based on an Improved Version of the Stochastic Matched Filter Communication avec acteBOUFFAUT, Léa; DREO, Richard; LABAT, Valérie; BOUDRAA, Abdel-Ouahab; BARRUOL, Guilhem (2017)As a first step to Antarctic Blue Whale monitoring, a new method based on a passive application of the Stochastic Matched Filter (SMF) is developed. To perform Z-call detection in noisy environment, improvements on the ...
-
Article dans une revue avec comité de lectureRAJAOMAZAVA, Tolotra Emerry; BENAOUICHA, Mustapha; ASTOLFI, Jacques-André; BOUDRAA, Abdel-Ouahab (MDPI AG, 2021-03)A fluid-structure interaction’s effects on the dynamics of a hydrofoil immersed in a fluid flow of non-homogeneous density is presented and analyzed. A linearized model is applied to solve the fluid-structure coupled ...