A new technique to reduce cross terms in the Wigner distribution

被引：90

作者：

Pachori, Ram Bilas ^{[1
]}

Sircar, Pradip ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India

来源：

DIGITAL SIGNAL PROCESSING | 2007年 / 17卷 / 02期

关键词：

Fourier-Bessel expansion; multicomponent nonstationary signals; time-frequency representation; Wigner distribution;

D O I：

10.1016/j.dsp.2006.10.004

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：466 / 474

页数：9

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