期刊
DIGITAL SIGNAL PROCESSING
卷 17, 期 2, 页码 466-474出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.dsp.2006.10.004
关键词
Fourier-Bessel expansion; multicomponent nonstationary signals; time-frequency representation; Wigner distribution
A new method for time-frequency representation (TFR) of a signal, which combines the Fourier-Bessel (FB) expansion and the Wigner-Ville distribution (WVD) has been presented in this paper. The FB expansion decomposes a multicomponent signal into a number of monocomponent signals, and then the WVD technique is applied on each component of the composite signal to analyze its time-frequency distribution (TFD). The simulation results show that the proposed technique based on the FB decomposition is a powerful tool for analyzing multicomponent nonstationary signals and for obtaining the TFR of the signal without introducing cross terms. (C) 2006 Elsevier Inc. All rights reserved.
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