Title :
Parametric TFR via windowed exponential frequency modulated atoms
Author :
Zou, Hongxing ; Dai, Qionghai ; Wang, Renming ; Li, Yanda
Author_Institution :
Dept. of Autom., Tsinghua Univ., Beijing, China
fDate :
5/1/2001 12:00:00 AM
Abstract :
We propose a new atom, namely, the dilated and translated windowed exponential frequency modulated functions (FM/sup m/let) for compactly characterizing both the signal´s time-invariant and time-varying spectral contents. The superiority of the proposed method to some existing time-frequency distributions (TFDs) is demonstrated using a bat sonar signal.
Keywords :
chirp modulation; frequency modulation; parameter estimation; signal representation; sonar signal processing; spectral analysis; time-frequency analysis; FM; bat sonar signal; parametric TFR; time-frequency distributions; time-frequency representation; time-invariant spectral content; time-varying spectral content; translated windowed exponential frequency modulated functions; windowed exponential frequency modulated atoms; Chirp modulation; Equations; Fourier transforms; Frequency modulation; Matching pursuit algorithms; Nonlinear distortion; Signal processing; Signal resolution; Sonar; Time frequency analysis;
Journal_Title :
Signal Processing Letters, IEEE
