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    Detecting Atlantic herring by parametric sonar

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    JAS0EL153.pdf (722.1Kb)
    Date
    2010-03-17
    Author
    Godø, Olav Rune  Concept link
    Foote, Kenneth G.  Concept link
    Dybedal, Johnny  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3365
    As published
    https://doi.org/10.1121/1.3336398
    DOI
    10.1121/1.3336398
    Keyword
     Echo; Sonar detection; Sonar signal processing; Underwater sound 
    Abstract
    The difference-frequency band of the Kongsberg TOPAS PS18 parametric sub-bottom profiling sonar, nominally 1–6 kHz, is being used to observe Atlantic herring. Representative TOPAS echograms of herring layers and schools observed in situ in December 2008 and November 2009 are presented. These agree well with echograms of volume backscattering strength derived simultaneously with the narrowband Simrad EK60/18- and 38-kHz scientific echo sounder, also giving insight into herring avoidance behavior in relation to survey vessel passage. Progress in rendering the TOPAS echograms quantitative is described.
    Description
    Author Posting. © Acoustical Society of America, 2010. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 127 (2010): EL153-EL159, doi:10.1121/1.3336398.
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    • Applied Ocean Physics and Engineering (AOP&E)
    Suggested Citation
    Journal of the Acoustical Society of America 127 (2010): EL153-EL159
     

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