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Combined Geoacoustic Inversion of Propagation and Reverberation Data

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2 Author(s)
Nielsen, P.L. ; NATO Undersea Res. Centre, La Spezia ; Harrison, C.

Sonar performance predictions in shallow water are strongly dependent on good knowledge of the geoacoustic and scattering properties of the seabed. One technique to extract information about the bottom is to use a towed source and a towed horizontal array. This towed system has been shown to be applicable for characterizing the bottom properties locally by inversion of the acoustic signals received directly on the towed array at short ranges. The same towed system has also been applied to extract bottom properties from long-range reverberation data providing effective bottom properties over a large area. However, independent geoacoustic inversion of the short-range propagation and long-range reverberation data can introduce low sensitivity and uncertainty in the extracted bottom properties. An attempt to resolve this low sensitivity and ambiguity is made by a simultaneous geoacoustic inversion of short-range propagation and long-range reverberation data with the intention of constraining the possible solutions of the bottom properties.

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:34 ,  Issue: 1 )

Date of Publication:

Jan. 2009

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