 |
Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
 |
|
Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
|
| HAL : hal-00661526, version 1 |
| Voir la fiche détaillée |  BibTeX,EndNote,... |
 |
| IEEE International Conference on Acoustics, Speech, and Signal Processing, Kyoto : Japon (2012) |
|
|
|
|
| Sparse underwater acoustic imaging: a case study |
|
|
| Nikolaos Stefanakis 1Jacques Marchal 2 |
|
|
| (25/03/2012) |
|
|
|
| Underwater acoustic imaging is traditionally performed with beam- forming: beams are formed at emission to insonify limited angular regions; beams are (synthetically) formed at reception to form the image. We propose to exploit a natural sparsity prior to perform 3D underwater imaging using a newly built flexible-configuration sonar device. The computational challenges raised by the high- dimensionality of the problem are highlighted, and we describe a strategy to overcome them. As a proof of concept, the proposed approach is used on real data acquired with the new sonar to obtain an image of an underwater target. We discuss the merits of the obtained image in comparison with standard beamforming, as well as the main challenges lying ahead, and the bottlenecks that will need to be solved before sparse methods can be fully exploited in the context of underwater compressed 3D sonar imaging. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | METISS (INRIA - IRISA) |
|
|
|
CNRS : UMR6074 – INRIA – Institut National des Sciences Appliquées (INSA) - Rennes – Université de Rennes 1 |
|
|
| 2 : | Institut Jean Le Rond d'Alembert (IJLRA) |
|
|
|
CNRS : UMR7190 – Université Pierre et Marie Curie [UPMC] - Paris VI |
|
|
| 3 : | Laboratoire d'informatique Fondamentale de Marseille (LIF) |
|
|
|
CNRS : UMR6166 – Université de la Méditerranée - Aix-Marseille II – Université de Provence - Aix-Marseille I |
|
|
|
|
|
|
|
|
|
| Qarma |
|
|
|
|
| Domaine | : | Sciences de l'ingénieur/Traitement du signal et de l'image Informatique/Traitement du signal et de l'image |
|
|
| sonar imaging. underwater acoustics – beamforming – orthogonal matching pursuit – sparse reconstruction – compressed sensing |
|
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|||||
|
|
|
| hal-00661526, version 1 | |
| http://hal.inria.fr/hal-00661526 | |
| oai:hal.inria.fr:hal-00661526 | |
| Contributeur : Nikolaos Stefanakis | |
| Soumis le : Vendredi 20 Janvier 2012, 17:35:13 | |
| Dernière modification le : Dimanche 22 Janvier 2012, 18:30:38 | |
