Passive Acoustic Detection of Marine Mammals

Abstract

A passive acoustic analysis of data recorded during the SACLANTCEN SWAC4 sea-trial in Kyparissiakos Gulf during May 1996 was performed with the specific objectives of detecting, localizing, and classifying marine mammal sounds. Detection and localization (bearing only) was performed using a passive sonar system in a playback mode and by an automatic detection algorithm for specific runs or run segments. The results of the automatic detection processing allow association over time and bearing, creating 'events' that may then be classified by experts. This memorandum describes the preprocessing of the SWAC4 sea-trial data and the algorithm used to perform the automatic detection processing. The results of the automatic detection processing are then displayed in time-beam number plots and used to perform rough localization of detected events through triangulation.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2000
Accession Number
AD1113807

Entities

People

  • Douglas A. Abraham

Organizations

  • SACLANT ASW Research Centre

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Detection
  • Acoustic Emissions
  • Active Sonar
  • Algorithms
  • Background Noise
  • Bandwidth
  • Data Analysis
  • Data Processing
  • Detection
  • Detectors
  • Doppler Effect
  • Frequency
  • Frequency Bands
  • Information Science
  • Marine Mammals
  • Nato
  • Odontocetes
  • Passive Sonar
  • Range Finding
  • Signal Processing
  • Sonar

Readers

  • Oceanography.
  • Sensor Fusion and Tracking Systems.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).