| Título: | Array element localization of a bottom moored hydrophone array |
| Autores: |
Barlee, Matthew; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3Y2, Canada Dosso, Stan; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC V8W 3Y2, Canada Schey, Philip; Space Naval Warfare Center (SPAWAR), 53560 Hull Street, San Diego, CA 92152-5001, United States |
| Fecha: | 2002-12-01 |
| Publicador: | Canadian Acoustics |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| Tema: |
Acoustic arrays Acoustic receivers; Algorithms; Computer simulation; Hydrophones; Inverse problems; Linearization; Monte Carlo methods; Mooring; Parameter estimation; Sensors; Tracking (position); Underwater acoustics; Array element localization; Hydrophone array; Light bulbs; Matched beam processing; Sound source localization; Ultra light horizontal array |
| Descripción: |
In ocean acoustics, rapidly deployable, autonomous, bottom moored hydrophone arrays allow for quick, cost effective deployment, but result in poor knowledge of sensor positions. Because advanced array processing techniques, such as Matched Beam Processing, are highly sensitive to errors in sensor location, an accurate assessment of hydrophone positions is necessary. This paper discusses array element localization (AEL) and its use in localizing the ULITE array, a horizontal array deployed in the Timor Sea during the 1998 RDS-2 trial. The ill-posed inverse problem of determining source (imploded light bulbs) and receiver positions from the relative arrival times of source transients is solved through regularized linearized inversion. The inversion solution fits the data to high precision and provides individual hydrophone position estimates that provide the smoothest array shape that is consistent with the acoustic data. Les systèmes acoustiques marins qui sont rapidement déployés au fond de la mer, et qui fonctionnent avec autonomie, offrent une méthode de recherche qui est de faible cout, mais qui donne une pauvre connaissance de les positions des récepteurs. Pacreque la validité des manipulations des donnés, comme celles obtenues par le Matched Beam Processing, est fortement dépendente sur la location des instruments, une précise determination de la position de l’instrument est nécessaire. Ce papier décrit la méthode de Localization des Éléments d’Étalage (AEL) et son utilization dans la localization du système ULITE, un étalage horizontal déployé dans la mer de Timor pendant l’essai RDS-2 de l’an 1998. La question iverse mal posée, celle de la determination des positions de les sources (des ampoules implosées) et les récepteurs par les tems d’arivee relatifs des transients de source, est résolu par l’inversion linéale régularisée. La solution d’inversion est une excellente réprésentation de les donnés, et donne les positions de chaque hydrophone en accordance avec un model qui donne la forme optimale a l’étalage acoustique, et qui est consistent avec les donnés acoustiques. |
| Idioma: | Inglés |
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