Design of time-frequency distributions for amplitude and IF estimation of multicomponent signals

Abstract

This paper p n a n t s a new class of time-frequency distributions (TFDs) suitable for efficient amplitude and instantaneous frequency (IF) estimation of monoand mud tiwmponent FM signals. The main characteristic of these TFDs, referred to as T-distributions, is that their kernels are functions of time only in the time-lag domain, hence the name time-only kernels. It is shown that separable time-lag kernels should be lag-independent for best resolution. In addition, amplitude estimation is possible directly from the T-distributions in the case of FM signals, a property that is not verified by other TFDs. The exponential and hyperbolic members of this class are analyzed. Numerical examples are incorporated to show the superior performance of the time-only kernels as compared to their two-dimensional counterparts.

DOI: 10.1109/ISSPA.2001.949847

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Cite this paper

@inproceedings{Hussain2001DesignOT, title={Design of time-frequency distributions for amplitude and IF estimation of multicomponent signals}, author={Zahir M. Hussain and Boualem Boashash}, booktitle={ISSPA}, year={2001} }