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arXiv · 2008.08988

Acoustic density estimation of dense fish shoals

B. Tallon·P. Roux·G. Matte·J. Guillard·S. E. Skipetrov
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Abstract

Multiple scattering of acoustic waves offers a noninvasive method for density estimation of a dense shoal of fish where traditional techniques such as echo-counting or echo-integration fail. Through acoustic experiments with a multi-beam sonar system in open sea cages, multiple scattering of sound in a fish shoal, and in particular the coherent backscattering effect, can be observed and interpreted quantitatively. Furthermore, a volumetric scan of the fish shoal allows isolation of a few individual fish from which target strength estimations are possible. The combination of those two methods allows for fish density estimation in the challenging case of dense shoals.

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B. Tallon, P. Roux, G. Matte, J. Guillard, S. E. Skipetrov. 2020-08-20. Acoustic density estimation of dense fish shoals. https://doi.org/10.1121/10.0001935

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