Localization of Short Duration Periodic Signals

Abstract

A method for localizing signals of interest includes initializing characteristics of the signals. Signals are acquired from a sensor array having at least three acoustic sensors. After digitization and conditioning, the signals associated with each sensor are validated by comparison with initialized characteristics. The signals are correlated across sensor groups to obtain time differences of arrival (TDOA). These TDOA are validated and associated with other TDOA from different times. TDOA from different sensor pairs are associated when they share a common sensor. A hyperbola of possible locations is created for each validated TDOA. Summation of the hyperbolas gives an intensity function. The location is identified as the most intense point in the intensity function. The source can be tracked across time as a computer output.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2013
Accession Number
ADA626739

Entities

People

  • Paul Baggenstoss

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Amplitude
  • Detection
  • Detectors
  • Experimental Data
  • Frequency
  • Frequency Bands
  • Frequency Domain
  • Hydrophones
  • Intensity
  • Inventions
  • Marine Mammals
  • Measurement
  • Odontocetes
  • Power Spectra
  • Time Domain
  • Undersea Warfare

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Radar Systems Engineering.
  • Sensor Fusion and Tracking Systems.