3 May 2016 Edge detection of red hind grouper vocalizations in the littorals
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Littoral regions typically present to passive sensors as a high noise acoustic environment, particularly with respect to port and harbor regions where tidal variation, often characterized as pink, mixes with reverberation from on-shore business and commercial shipping, often characterized as white. Some fish in these regions, in particular epiphenalius Guttatus or more commonly the red hind grouper, emit relatively narrowband tones in low frequencies to communicate with other fish in such regions. The impact of anthropogenic noise sources on the red Hind and other fish is a topical area of interest for wildlife fisheries, private sportsmen and military offices that is not considered here; the fact that fish species continue to populate and communicate in these regions in the presence of high noise content lends some study to the signal content and modeling of a potential biologically inspired receiver structure.
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Cameron A. Matthews, Cameron A. Matthews, Pierre-Philippe Beaujean, Pierre-Philippe Beaujean, } "Edge detection of red hind grouper vocalizations in the littorals", Proc. SPIE 9823, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XXI, 98231W (3 May 2016); doi: 10.1117/12.2230147; https://doi.org/10.1117/12.2230147

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