Modelling uncertainty in an underwater acoustic positioning system

Auteurs-es

  • Dugald Thomson School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada
  • Stan E. Dosso School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada
  • Emmett Gamroth Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada
  • Colin Bradley Department of Mechanical Engineering, University of Victoria, Victoria, BC, Canada

Mots-clés :

Autonomous underwater vehicles, Equipment testing, Hydrophones, Underwater acoustics, Acoustic localization, Acoustic transmission, Arrival time, Environmental factors, Hydrophone geometry, Localization accuracy, Source location, Test range, Timing errors, Underwater acoustic positioning

Résumé

Cet article développe un inversion de temps d'arrivée en traçant des rayons pour simuler la précision d'un système actif de localisation acoustiques sous-marins, et examine la précision de localisation en fonction de diverses sources d'erreur et de facteurs géométriques et environnementale. Le système considéré ici simule la localisation d'un véhicule autonome sous-marin en utilisant les instants d'arrivés des transmissions acoustiques provenant d'une source à bord tel que mesuré à partir d’hydrophones répartis spatialement sur une plage de test. Puisque l'incertitude de localisation est fonction de l'emplacement de la source, les incertitudes sont calculées pour la source à une grille de lieux sur les zones du banc d'essai. La précision de localisation est considérée comme une fonction de synchronisation des erreurs, l'incertitude dans l’emplacement des hydrophones, la profondeur des cibles, les variations du profile vitesse-son, et la géométrie des hydrophones.

Fichiers supplémentaires

Publié-e

2012-03-01

Comment citer

1.
Thomson D, Dosso SE, Gamroth E, Bradley C. Modelling uncertainty in an underwater acoustic positioning system. Canadian Acoustics [Internet]. 1 mars 2012 [cité 19 mai 2026];40(1):13-8. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2501

Numéro

Vol. 40 No. 1 (2012)

Rubrique

Articles techniques

Licence

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