EM121 Sonar Calibration Experiment Using MPL's Phantom DS4 ROV.

Abstract

This report presents the results of a series of measurements carried out at sea in December 1995, to determine the acoustic source levels of a SIMRAD EM-121 multibeam echo-sounder installed aboard USNS SUMNER (TAGS-61). This was done by navigating a reference acoustic transducer, mounted on a Phantom DS4 ROV, below the hull of the ship. The work involved the collaborative efforts of personnel from the Naval Oceanographic Office (NAVOCEANO), the Naval Sea System Command (NAVSEA), SIMRAD, and the Marine Physical Laboratory (MPL). Personnel from the Naval Command Control and Ocean Surveillance Center (NRaD) in Warminster, PA, were involved also with acoustic data acquisition on the EM-121 hydrophone array, but these measurements are not discussed here. The measurements were taken around 25 deg 10'N, 77 deg 55'W at the northern end of the Tongue of the Ocean, in 2500 m of water depth.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1996
Accession Number
ADA322849

Entities

People

  • Christian De Moustier

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Frequencies
  • Acoustic Measurement
  • Acoustic Properties
  • Acoustics
  • Calibration
  • Data Acquisition
  • Data Reduction
  • Far Field
  • Frequency
  • Hydrophones
  • Measurement
  • Military Research
  • Ocean Surveillance
  • Radiation Patterns
  • Sonar
  • Sound Pressure
  • Transducers

Fields of Study

  • Environmental science

Readers

  • Acoustical Oceanography.
  • Maritime and Naval Warfare Studies
  • Oceanography.