Stochastic Variability of Fish School Scattering and Attenuation Fluctuation Effects Based on Collective Animal Behavior Modeling

Abstract

The goal of this work is to investigate spatial and temporal fluctuations in SONAR reverberation and attenuation due to schooling fish. The purpose is to foster the improvement of propagation/reverberation codes used by the Navy, by incorporating boundary interference effects and oceanographic variability. The objective of this research is to develop a theory, based on a verified mathematical/computational model of acoustic scattering from multiple swim bladder fish, which includes coherent scattering and radiative interactions, and also zoologically realistic computational modeling of fish school behavior, to describe and explain stochastic variations in resonance frequency (and near resonance frequency) acoustic fish school scattering, attenuation, and target strength.

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Document Details

Document Type
Technical Report
Publication Date
Apr 16, 2021
Accession Number
AD1128684

Entities

People

  • Christopher Feuillade

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Properties
  • Acoustic Scattering
  • Acoustics
  • Angle Of Incidence
  • Animal Behavior
  • Animals
  • Attenuation
  • Bragg Scattering
  • Computations
  • Differential Equations
  • Equations
  • Fish
  • Frequency
  • Intensity
  • Reflection
  • Resonance Scattering
  • Scattering
  • Shape
  • Steady State
  • Swim Bladders
  • Target Strength
  • Three Dimensional

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation