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IF equation: a feature extractor for high-concentration time-frequency representation of mixed signals
By the analysis of the properties of the IF equation, we prove that a good IF equation can unify the well-known IF and group delay estimators and provides an effective way to characterize the mixture of time-varying and frequency-varying signals.
High-resolution chirplet transform: from parameters analysis to parameters combination
The standard chirplet transform (CT) with a chirp-modulated Gaussian window provides a valuable tool for analyzing linear chirp signals.
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