WANG Ran, JIANG Yi-cheng. A Realization of Time-Frequency Distributions with Complex-lag Argument for Multicomponent Signal[J]. Acta Electronica Sinica, 2012, 40(1): 60-65.
WANG Ran, JIANG Yi-cheng. A Realization of Time-Frequency Distributions with Complex-lag Argument for Multicomponent Signal[J]. Acta Electronica Sinica, 2012, 40(1): 60-65. DOI: 10.3969/j.issn.0372-2112.2012.01.010.
A new type of time-frequency distribution with complex-lag argument (CTD) is proposed recent years.For monocomponent signal
it provides a very high time-frequency concentration.However
for multicomponent signal
CTD realized by definition or traditional frequency domain convolution method may gain a lot of cross terms.In this paper
three aspects of modifications have been done to traditional frequency domain convolution method of CTD.A new modified frequency domain convolution method of CTD suitable for multicomponent signal is proposed.CTD realized by the method which proposed by this paper provides very high time-frequency concentration and the cross-terms are greatly reduced at the same time.This fact is proven by simulation results.