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Selective source location by exploitation of spectral coherence

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2 Author(s)
Gardner, W.A. ; Dept. of Electr. Eng. & Comput. Sci., California Univ., Davis, CA, USA ; Chih-Kang Chen

A new approach to time-difference-of-arrival (TDOA) estimation for modulated signals is proposed. Unlike most previous approaches based on the auto- and cross-correlation functions or auto- and cross-spectra for the signals from a pair of sensors, the new approach is based on the cyclic auto- and cross-correlation functions or cyclic auto- and cross-spectra. The proposed approach exploits the spectral coherence property exhibited by modulated signals by virtue of their cyclostationarity. That is, cyclostationary processes are correlated with certain frequency-shifted as well as time-shifted versions of themselves

Published in:

Spectrum Estimation and Modeling, 1988., Fourth Annual ASSP Workshop on

Date of Conference:

3-5 Aug 1988