The Effects of Towfish Motion on Sidescan Sonar Images

Abstract

A simulation algorithm to estimate the geometrical effects of towfish motions on sidescan sonar images is described. The results of simulations using the algorithm are discussed, and bounds for acceptable amplitudes of towfish motions are estimated. Yaw is found to be the most potentially damaging towfish motion, and a sinusoidal yaw motion with amplitude 0.5 deg and period 3 s is found to induce unacceptable distortion of a towfish image. The effects of towfish motions on the coverage of the seabed are also discussed.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1994
Accession Number
ADA279252

Entities

People

  • S. D. Anstee

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acquisition
  • Amplitude
  • Angular Motion
  • Australia
  • Coordinate Systems
  • Depression Angles
  • Distortion
  • Engineering
  • Far Field
  • Materials
  • Near Field
  • Seabed
  • Ships
  • Simulations
  • Slant Range
  • Sonar Images
  • Standards

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Plasma Physics / Magnetohydrodynamics
  • ballistics.