Performance of three acoustical methods for localizing whales in the Saguenay - St. Lawrence Marine Park

Auteurs-es

  • Nathalie Roy Maurice Lamontagne Institute, Fisheries and Oceans Canada, P.O. Box 1000, Mont-Joli, QC G5H-3Z4, Canada
  • Yvan Simard Maurice Lamontagne Institute, Fisheries and Oceans Canada, P.O. Box 1000, Mont-Joli, QC G5H-3Z4, Canada
  • Jean Rouat Department of Electrical and Computer Engineering, University of Sherbrooke, 2500 boul. de l'Université, Sherbrooke, QC J1K 2R1, Canada

Mots-clés :

Communication channels (information theory), Monte Carlo methods, Parks, Ray tracing, Speed, Ultrasonic velocity measurement, Uncertainty analysis, Marine parks, Monte-Carlo simulations

Résumé

Trois algorithmes sont explorés pour la localisation de vocalises de rorqual commun enregistrées par un réseau d'hydrophones à large ouverture déployé dans le Parc Marin du Saguenay-Saint-Laurent. Les méthodes doivent composer avec une vitesse du son variable dans l'espace et le temps, des erreurs dans les mesures des différences de temps d'arrivée (DTA) avec un environnement bruyant, et souvent un nombre limité d'hydrophones ayant capté un événement donné. Le réseau était composé de 5 hydrophones autonomes AURAL avec une ouverture totale d'environ 40 km, couplé avec 2 hydrophones d’un petit réseau côtier. La dérive des horloges des hydrophones autonomes a été évaluée avec un niveau d’incertitude à l'aide de sources aux temps connus ainsi que de la référence temporelle du réseau côtier.

Fichiers supplémentaires

Publié-e

2008-03-01

Comment citer

1.
Roy N, Simard Y, Rouat J. Performance of three acoustical methods for localizing whales in the Saguenay - St. Lawrence Marine Park. Canadian Acoustics [Internet]. 1 mars 2008 [cité 21 févr. 2025];36(1):160-4. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2006

Numéro

Vol. 36 No. 1 (2008)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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