Object Detection in Oceanic Sediments Using Quadratic Detectors and Wavelets

Abstract

Methods for processing parametric broadband sonar returns are presented with the goal of locating buried objects from clutter. A gain correction algorithm based on wavelets is employed to correct for frequency dependent signal losses in multiple frequency bands. Quadratic detectors are designed to filter in time, frequency, and spatial domains simultaneously. These normalized quadratic detectors are shown to successfully isolate regions with similar characteristics by exploiting spectral and temporal features in both horizontal and vertical directions.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2000
Accession Number
ADA386341

Entities

People

  • Andrew Martinez
  • Eric Flattem
  • Maria Kalcic

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Broadband
  • Buried Objects
  • Computer Science
  • Data Sets
  • Detection
  • Detectors
  • Electrical Engineering
  • Engineering
  • Field Tests
  • Frequency
  • Frequency Bands
  • Hydrophones
  • Military Research
  • Puget Sound
  • Sediments
  • Universities

Readers

  • Acoustical Oceanography.
  • Image Processing and Computer Vision.
  • Wave Propagation and Nonlinear Chaotic Dynamics.