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Shallow water reverberation: normal-mode model predictions compared with bistatic towed-array measurements

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1 Author(s)
Ellis, D.D. ; SACLANT Undersea Res. Centre, La Spezia, Italy

A normal-mode model for calculating reverberation in shallow water is presented. Some illustrative calculations are given for the bistatic case and for vertical and horizontal line-array receivers. Emphasis is on comparison with measurements of bistatic reverberation obtained at a shallow-water area in the Mediterranean. The data are from explosive sources received by a towed array, analyzed in one-tenth-decade frequency bands at subkilohertz frequencies. Model calculations for a flat-bottomed environment indicate a strong dependence on propagation conditions and a weak dependence on beam steering direction. Preliminary comparisons give quite good agreement between measured reverberation and model predictions, but point to the need for extending modeling efforts to handle range-dependent environments

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:18 ,  Issue: 4 )

Date of Publication:

Oct 1993

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