Time-frequency analysis of chaos system based on Wigner distribution

被引：0
|
作者：
Nie, CY [1 ]
Shi, YW [1 ]
Yi, WS [1 ]
Cheng, FQ [1 ]
机构：
[1] Jilin Univ, Commun Inst, Changchun 130025, Peoples R China
来源：
2004 7TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING PROCEEDINGS, VOLS 1-3 | 2004年
关键词：
Wigner distribution; chaos system; random signal;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The paper first analysis the energy distribution of chaos signal by Wigner distribution. Wigner distribution is one of time-frequently distribution methods and can describe signal energy distribution. At the same time, we analysis respectively the Wiger distribution of chaos signal and random signal by time-frequently distribution, the problem is dealed with successfully, which the two signal is difficult to be distinguished by correlation method and spectrum method. Simulation experiment indicate that chaos system is a narrowband system, for the frequency band of the mixed signal of chaos system becomes narrow show that it can fully suppress the signal outside inherent frequency, like noise. The narrowband filter character of chaos system proposed in this paper offer a new way and method for detecting weak signal in strong noise.
引用
收藏
页码：396 / 398
页数：3
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