Výsledky vyhledávání - "Grégoire Le Touzé"

Akademický článek

Underwater Broadband Source Localization Based on Modal Filtering and Features Extraction

Autor: Dominique Fattaccioli, Jérôme I. Mars, Xavier Cristol, Barbara Nicolas, Grégoire Le Touzé, Maciej Lopatka

Publikováno v: EURASIP Journal on Advances in Signal Processing, Vol 2010 (2010)

Passive source localization is a crucial issue in underwater acoustics. In this paper, we focus on shallow water environment (0 to 400 m) and broadband Ultra-Low Frequency acoustic sources (1 to 100 Hz). In this configuration and at a long range, the

Externí odkaz: https://doaj.org/article/7863525a5d274105ae5d1dc75ae29be3

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Physics-Based Time-Frequency Representations for Underwater Acoustics: Power Class Utilization with Waveguide-Invariant Approximation

Autor: Jerome Mars, Grégoire Le Touzé, Julien Bonnel, Barbara Nicolas

Publikováno v: IEEE Signal Processing Magazine. 30:120-129

Time-frequency (T-F) analysis of signals propagated in dispersive environments or systems is a challenging problem. When considering dispersive waveguides, propagation can be described by modal theory. Propagated signals are usually multicomponent, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8edae4521586afa329ab6a95bb7d31ea
https://doi.org/10.1109/msp.2013.2267651

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Wavefield extraction using multi-channel chirplet decomposition

Autor: Grégoire Le Touzé, Jacques Blanco, Nathalie Favretto-Cristini, Paul Cristini

Publikováno v: Journal of the Acoustical Society of America
Journal of the Acoustical Society of America, 2010, 127 (4), pp.EL140-EL145. ⟨10.1121/1.3327245⟩
Journal of the Acoustical Society of America, Acoustical Society of America, 2010, 127 (4), pp.EL140-EL145. ⟨10.1121/1.3327245⟩

International audience; In acoustical and seismic fields, wavefield extraction has alwaysbeen a crucial issue to solve inverse problem. Depending on the experimentalconfiguration, conventional methods of wavefield decomposition might nolonger likely

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d2c41bd57f992c7e83fe0c443551e6f
https://doi.org/10.1121/1.3327245

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Raypath separation with high resolution processing

Autor: Florian Aulanier, Grégoire Le Touzé, Longyu Jiang, Jerome Mars, Barbara Nicolas

Publikováno v: OCEANS 2011-OCEANS '11 MTS/IEEE. Oceans of Energy for a Sustainable Future
OCEANS 2011-OCEANS '11 MTS/IEEE. Oceans of Energy for a Sustainable Future, Jun 2011, Santander, Spain. pp.n/c, ⟨10.1109/Oceans-Spain.2011.6003505⟩

International audience; In this paper, a high resolution spatio-temporal analysis algorithm is presented and applied to separate the raypaths recorded with sensors for ocean acoustic tomography. It is a extended version of classical MUSIC, we propose

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a070c2e8cfdb200e495be3f7ab9a48e
https://doi.org/10.1109/oceans-spain.2011.6003505

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Underwater Broadband Source Localization Based on Modal Filtering and Features Extraction

Autor: Xavier Cristol, Jerome Mars, Dominique Fattaccioli, Grégoire Le Touzé, Barbara Nicolas, Maciej Lopatka

Publikováno v: EURASIP Journal on Advances in Signal Processing
EURASIP Journal on Advances in Signal Processing, SpringerOpen, 2010, 2010, pp.article ID 304103. ⟨10.1155/2010/304103⟩
EURASIP Journal on Advances in Signal Processing, Vol 2010, Iss 1, p 304103 (2010)
EURASIP Journal on Advances in Signal Processing, Vol 2010 (2010)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ed48e5621282918479b25a0f8c1f9c0
https://hal.archives-ouvertes.fr/hal-00557090

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Mode characterization in shallow water using warping tools

Autor: Grégoire Le Touzé, Julien Bonnel, Barbara Nicolas, Jerome Mars, Dominique Fattaccioli

Publikováno v: Acoustics 2009-157th Meeting of The Acoustical Society of America
Acoustics 2009-157th Meeting of The Acoustical Society of America, May 2009, Portland, United States. pp.2541-2541

Résumé publié in The Journal of The Acoustical Society of America, 125 (4) 2541. Lien sur JASA http://scitation.aip.org/vsearch/servlet/VerityServlet?KEY=ASADL&smode=strresults&sort=rel&maxdisp=25&threshold=0&pjournals=ARLOFJ%2CJASMAN%2CNOCOAN%2CS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42260a989ada8f1d093d271bb3b9fb84
https://hal.science/hal-00386483

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Microseismic wavefield separation using multi‐channel chirplet decomposition

Autor: Paul Cristini, Jacques Blanco, Grégoire Le Touzé

Publikováno v: SEG Technical Program Expanded Abstracts 2009.

Small earthquakes and acoustic emissions making up microseismic events are characterized by interfering complex wavefields. Many authors have discussed the problem of achieving satisfactorily wavefield separation process mainly by considering propaga

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86f40a40d73f4ff879a9aa6d0f3223a2
https://doi.org/10.1190/1.3255148

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Double-Capon and double-MUSICAL for arrival separation and observable estimation in an acoustic waveguide

Autor: Benoit Oudompheng, Philippe Roux, Grégoire Le Touzé, Barbara Nicolas, Jerome Mars

Publikováno v: EURASIP Journal on Advances in Signal Processing. 2012(1)

Recent developments in shallow water ocean acoustic tomography propose the use of an original configuration composed of two source-receiver vertical arrays and wideband sources. The recording space thus has three dimensions, with two spatial dimensio

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