Comparing Two Scientific Echo Sounders

Abstract

The Simrad EK500 and EK60 scientific echo sounders have been operated with the same 38-kHz, 12-deg-beamwidth, split-beam transducer, with alternate pinging by means of an external triggering-and-switching system. The respective performances of the two systems are compared by means of standard-target calibrations conducted at the acoustic calibration facility on Iselin Dock at Woods Hole Oceanographic Institution with a 60-mm-diameter copper sphere. Principal comparisons include those of time series of echo strength and target strength, split-beam-determined angles, and derived measures of directivity.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2003
Accession Number
ADA497849

Entities

People

  • Dezhang Chu
  • J. Michael Jech
  • Kenneth G. Foote
  • Stephen P. Liberatore

Organizations

  • Woods Hole Oceanographic Institution

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Acoustic Beams
  • Calibration
  • Computers
  • Diameters
  • Echoes
  • Equations
  • Errors
  • Experimental Design
  • Measurement
  • Personal Computers
  • Sonar
  • Standards
  • Target Strength
  • Targets
  • Transducers

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Fluid Dynamics.
  • Oceanography.