Advanced Beamforming Concepts: Source Localization Using the Bispectrum, Gabor Transform, Wigner-Ville Distribution, and Nonstationary Signal Representation

Abstract

Power spectral estimation provides one approach to direction finding. This approach readily generalizes to produce a collection of newer direction finding algorithms. Estimation of the bispectrum yields a bispectral direction finder. Estimates of time-frequency distributions produce Wigner-Ville and Gabor direction-finders. Some types of non-stationary time series admit spectral estimators which can be used to localize a source. Chaotic signals can also be localized using recently developed parameter estimators.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1991
Accession Number
ADA244884

Entities

People

  • J. C. Allen

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Algorithms
  • Computer Science
  • Computers
  • Direction Finding
  • Electrical Engineering
  • Estimators
  • Frequency
  • Information Science
  • Information Theory
  • Linear Arrays
  • Plane Waves
  • Power Spectra
  • Signal Processing
  • Simulations
  • Stationary
  • Statistical Analysis
  • Stochastic Processes

Fields of Study

  • Engineering

Readers

  • Calculus or Mathematical Analysis
  • Image Processing and Computer Vision.
  • Phased Array Antenna Design.