The Time and Lag window Selection in Wigner-Ville Distribution

The paper provides the conditions on the selection of the lap and the time windows in Wigner-Ville distribution when it is considered for time-varying power spectrum estimation. It is shown that the general class of non-stationary processes requires the inseparability of the two windows. The separat...

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Author: Moeness Amin
Conference Location: Dallas, TX
Conference Dates: Apr 1987
Proceedings Title: IEEE International Conference on Acoustics, Speech and Signal Processing, Vol. 12
Format: Conference Proceeding
Published: 1987
Summary: The paper provides the conditions on the selection of the lap and the time windows in Wigner-Ville distribution when it is considered for time-varying power spectrum estimation. It is shown that the general class of non-stationary processes requires the inseparability of the two windows. The separation is adequate for a certain class of processes in which the autocorrelation is considered invariant along time intervals whose length is shorter for smaller lags. The paper presents a discussion which relates the time-averaging estimation of the autocorrelation function with the nature of its slow time-variation.