Advanced Beamforming Concepts: Source Localization Using the Bispectrum, Gabor Transform, Wigner-Ville Distribution, and Nonstationary Signal Representation
NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
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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.
- Direction Finding