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|Title:||Hydrophone self-localisation using travel times estimated from ocean noise cross-correlations|
|Citation:||Proceedings of the 20th International Congress on Acoustics (ICA 2010), held in Sydney, New South Wales 23-27 August 2010 / M. Burgess, J. Davey, C. Don and T. McMinn (ed.): pp.1-6|
|Publisher:||Australian Acoustical Society|
|Conference Name:||International Congress on Acoustics (ICA) (20th : 2010 : Sydney, New South Wales)|
|Laura A. Brooks and Peter Gerstoft|
|Abstract:||Approximation of acoustic Green’s functions through cross-correlation of acoustic signals in the ocean is a relatively young field that has become an area of interest over the past few years. Although the amplitudes of these estimates generally differ from those of the true Green’s Function, the estimated arrival structure can be highly accurate. Interhydrophone travel times extracted from these Green’s Function estimates can therefore be relied upon for practical applications. Acoustic data were collected for two weeks during late 2006 on an L-shaped array (combination of vertical hydrophone line array and horizontal bottom-mounted hydrophone line array) that was deployed in shallow water ( 70- 75m depth) on the New Jersey Shelf. The data were cross-correlated and acoustic Green’s Functions were subsequently estimated. This paper describes how the inter-hydrophone travel times extracted from these Green’s Function estimates were used to self-localise the array. Successful implementation of this cross-correlation derived travel-time application provided the array geometry information necessary for both ambient and active source acoustic data recorded on the array to be useful for other analyses.|
|Rights:||© Australian Acoustical Society, NSW Division, 2010. The proceedings of ICA 2010 have been reproduced from author-submitted files. The authors are solely responsible for the technical content and opinions expressed therein. The opinions expressed are not necessarily those of the International Commission for Acoustics or the Australian Acoustical Society. Permission is granted for any person to reproduce a part of any paper provided that the permission is obtained from the author(s) and credit is given to the author(s) and these conference proceedings|
|Appears in Collections:||Mechanical Engineering publications|
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