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The instantaneous frequency (IF) is a very important feature of nonstationary signals in numerous applications. The first overview of the concept and application of the IF estimators is presented in seminal papers by Boashash. Since then, a significant knowledge has been gained about the performance of the IF estimators. This knowledge has been used not only for development of various IF estimators...
This paper presents a generalization of cubic phase function (CPF) for two-dimensional (2-D) cubic phase polynomial phase signals (PPS). Since a straightforward application of the CPF to the 2-D PPS leads to a demanding three-dimensional (3-D) search an efficient implementation is proposed by using genetic algorithms. Simulation results demonstrate that the proposed approach outperforms the classical...
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