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TIME-FREQUENCY REPRESENTATION OF NONSTATIONARY SIGNALS VIA DISCRETE GABOR TRANSFORM AND WIGNER VILLE DISTRIBUTION

Time-frequency representations (TFRs) have been developed as tools for analysis of nonstationary signals. In this study, we present overview of timefrequency analysis methods and some of the key problems. The methods in time-frequency domain, which are based on Gabor transform (GT) and wigner-ville distribution (WVD) are effective in dealing with both simulated and real data. The use of the described methods for time-frequency analysis is presented.