| Título: | Robust 2D localization of low-frequency calls in shallow waters using modal propagation modelling |
| Autores: |
Gervaise, C.; E3I2, EA3876, GIS Europôle Mer, 2 Rue François Verny, 29200 Brest, France Vallez, S.; E3I2, EA3876, GIS Europôle Mer, 2 Rue François Verny, 29200 Brest, France Stephan, Y.; CMO/SHOM, 13 Rue Chatellier, 29200, Brest, France Simard, Y.; Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 allée des Ursulines, Rimouski, QC G5L 3A1, Canada |
| Fecha: | 2008-03-01 |
| Publicador: | Canadian Acoustics |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Conference Proceedings Actes de congrès |
| Tema: |
Computer simulation Acoustics; Electroacoustic transducers; Mammals; Two dimensional; Low frequencies; Modal propagation; Shallow waters |
| Descripción: |
We propose a new method to localize low-frequency calls in 2D in shallow waters from a sparse array of hydrophones using modal propagation modelling. An analysis of modal propagation modelling of transients signals in shallow water environment shows that the dispersive behaviour of the waveguide can be exploited to design a robust localization scheme without requiring any knowledge of the acoustics properties of the environment (bottom and water column) nor any simulation of propagation, The localization scheme also does not require synchronization of the array and is therefore independent of any clock drift. Promising results are obtained for Northern right whale gunshot calls from 'Bay of Fundy data set of the 2003 Workshop on Detection and Localization of Marine Mammals Using Passive Acoustics.'. Dans ce papier, un algorithme robuste de localisation 2D à partir des émissions transitoires dans des milieux petits fonds est proposé. Il s’appuie sur un modèle de propagation modale. Une analyse des phénomènes de dispersion induits par la propagation montre qu’il est possible, à partir d’un réseau lâche d’hydrophones, de proposer une méthode de localisation ne nécessitant ni la connaissance du milieu, ni l’exécution d’un code de propagation. L’algorithme de localization ne nécessite pas la synchronization du réseau et est par conséquent indépendant des dérives d’horloges. Des résultats encourageants sont obtenus pour localiser les émissions « gunshot » des baleines franches à partir du jeu de données de la Baie de Fundy, de ‘l’Atelier de 2003 sur la détection, la localisation et la classification de mammifères marins par acoustique passive’. |
| Idioma: | Inglés |
1 A comparison of imaging modalities to monitor thermal and mechanical ultrasound tissue therapies por Worthington, Arthur; Department of Physics, Ryerson University, Toronto, Canada,Narasimhan, Sankar; Department of Physics, Ryerson University, Toronto, Canada,Tavakkoli, Jahan; Department of Physics, Ryerson University, Toronto, Canada,Kolios, Michael C.; Department of Physics, Ryerson University, Toronto, Canada | 6 A comparison of spatial listening in a soundbooth versus an immersive virtual environment por Maracle, Jacob; Dept of Psychology, University of Toronto, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada,Lau, Sin Tung; Dept of Psychology, University of Toronto, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada,Coletta, Dario; Dept of Psychology, University of Toronto, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada,Singh, Gurjit; Dept of Psychology, University of Toronto, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada,Kathleen Pichora-Fuller, M.; Dept of Psychology, University of Toronto, 3359 Mississauga Rd N, Mississauga, ON L5L 1C6, Canada,Campos, Jennifer; Toronto Rehabilitation Institute, 550 University Ave., Toronto, ON M5G 2A2, Canada |
2 | 7 The reliability of personal noise dosimeters under steady-state and variable noise exposure por Hetu, R.; Groupe d'Acoust., Montreal Univ., Que., Canada,Rheault, M.; Groupe d'Acoust., Montreal Univ., Que., Canada |
3 Isoparametric finite element using cubic hermite polynomials for acoustics in duct components with flow por Stredulinsky, D.C.; Defence Res. Establ. Atlantic, Dartmouth, NS, Canada,Craggs, A. | 8 Temporal cues support syntactic identification por Wiley, Michelle D.; Univ of British Columbia, Vancouver, Canada,Pichora-Fuller, M.Kathleen; Univ of British Columbia, Vancouver, Canada |
4 Controle du Bruit des Thermopompes en Milieux Residentiels,Controle du Bruit des Thermopompes en Milieux Residentiels por Migneron, J-G.,Abonce, R.,Lemieux, P. | 9 Canadian Standards Association activity in acoustics por Kelsall, T.; Hatch, Mississauga, Ont., Canada |
5 Vibration d'un train lorsque le sol est gelé por Chamberland, Claude; SNC-LAVALIN INC, Division Environnement, Canada,Duchassin, Franck; SNC-LAVALIN INC, Division Environnement, Canada | 10 Speaker identification by computer and human evaluated on the SPIDRE corpus por Ezzaidi, Hassan; ERMETIS, DSA, Univ. du Que. a Chicoutimi, Chicoutimi, Qué. G7H 2B1, Canada,Rouat, Jean; ERMETIS, DSA, Univ. du Que. a Chicoutimi, Chicoutimi, Qué. G7H 2B1, Canada |