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Communication dans un congrès

Sub-Antenna Sparse Processing for Coherence Loss in Underwater Source Localization

Angélique Drémeau 1, 2 Riwal Lefort 1
1 Lab-STICC_ENSTAB_CID_TOMS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
2 Pôle STIC_AP
ENSTA Bretagne - École Nationale Supérieure de Techniques Avancées Bretagne
Abstract : In underwater acoustics, inversion tech- niques, also called "Matched Field" processing, remain the best methods for locating acoustic sources. But this is without counting on the environmental parameter fluctuations that lead to injurious coherence loss. We have shown in a previous work that a sub-antenna approach could be well suited to deal with such coher- ence loss, however at the expense of a lower resolution. In this paper, we propose to solve this drawback by considering sparse priors. In the experimental part of this paper, by using numerical simulations of plane waves subject to coher- ence loss, we demonstrate that the proposed method not only outperforms a classical beamformer in terms of source localization performance, but also, that it improves the antenna resolution.
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Communication dans un congrès
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https://hal.archives-ouvertes.fr/hal-01653652
Contributeur : Annick Billon-Coat <>
Soumis le : vendredi 1 décembre 2017 - 16:52:36
Dernière modification le : vendredi 23 octobre 2020 - 10:46:56

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Angélique Drémeau, Riwal Lefort. Sub-Antenna Sparse Processing for Coherence Loss in Underwater Source Localization. EUSIPCO 2017, Aug 2017, Kos, Greece. ⟨10.23919/EUSIPCO.2017.8081643⟩. ⟨hal-01653652⟩

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