... a Dirac function; (e) TFR by standard S-transform for a 30 Hzsinusoid; and (f) TFR by standard S-transform of the Dirac delta function. A window function used in S-transform is a scalable Gaus-sian ... (ICASSP ’94), vol. 4, pp. 149–152, Ade-laide, SA, Australia, April 1994.[24] F. Gini and G. B. Giannakis, “Hybrid FM-polynomial phase signal modeling: parameter estimation and Cram´er-Raobounds,” ... representations (TFR) indicate variations ofthe spectral characteristics of the signal as a function of time,they are ideally suited for nonstationary signals [1, 2]. Theideal time-frequency transform...