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Processing of Fish Echo-Signals for Classification Purpose

  • D. Vray
  • G. Gimenez

Abstract

Echo-sounding is extensively used during acoustical sea-surveys. Two techniques permit us to process the received echoes in order to estimate fish densities: echo counting and echo integration (evaluation of signal energy). However, it is necessary to know the nature of insonified fishes to interpret the data given by these techniques. We propose to study the characteristics of echoes by means of digital processing without a priori information on the scattering bodies. At first, we digitilize and compact the recorded signals, then pertinent parameters are extracted from the echoes, afterwards, their statistical properties are studied.

Keywords

Direct Memory Access Target Strength Data Analysis Algorithm Underwater Acoustic Signal Marine Fish Population 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • D. Vray
    • 1
  • G. Gimenez
    • 1
  1. 1.Laboratoire de Traitement du Signal et UltrasonsINSA 502Villeurbanne cedexFrance

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