A METHOD FOR IMPROVED DISTRIBUTION CONCENTRATION IN THE TIME-FREQUENCY ANALYSIS OF MULTICOMPONENT SIGNALS USING THE L-WIGNER DISTRIBUTION

被引：50
|
作者：
STANKOVIC, L
机构：
[1] Elektrotehnicki fakultet, Montenegro, Podgorica
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1995年 / 43卷 / 05期
关键词：
D O I：
10.1109/78.382413
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：
The energy location in the Cohen class of time-frequency distributions is analyzed, If the instantaneous frequency is linear, then only the Wigner distribution produces the ideal energy concentration, The scaled version of the Wigner distribution (L-Wigner distribution), is used to improve the time-frequency representation of signals with nonlinear instantaneous frequencies. In the case of multicomponent signals, the cross terms, appearing in the Wigner distribution and in the L-Wigner distribution, can be easily removed or reduced in a computationally very efficient way. The theory is illustrated on the numerical examples with multicomponent noisy signals.
引用
收藏
页码：1262 / 1268
页数：7
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