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| 微弱正弦信号混沌检测的仿真分析 | |
| 引用本文： | 杨辉,孔晓琨,郭玉萍. 微弱正弦信号混沌检测的仿真分析[J]. 西安邮电学院学报, 2008, 13(1): 65-68 |
| 作者姓名： | 杨辉 孔晓琨 郭玉萍 |
| 作者单位： | 1. 西安邮电学院,通信工程系,陕西,西安,710121 2. 西安电子科技大学,通信学院,陕西,西安,710071 3. 西安工业大学,电信学院,陕西,西安,710032 |
| 摘 要： | 研究了一种在噪声背景下用混沌振子检测微弱正弦信号的时域处理方法。分析了基于相平面变化进行微弱正弦信号检测的Duffing方程的数学模型,着重对与策动力频率不同的信号进行了仿真分析。结果表明:Duffing振子对与系统策动力频率一致的信号敏感,而对其它频率的信号不太敏感,且对噪声具有一定的免疫力。 |
| 关 键 词： | 微弱信号检测 Duffing振子 间歇混沌 |
| 文章编号： | 1007-3264（2008）01-0065-04 |
| 收稿时间： | 2007-07-11 |
| 修稿时间： | 2007-07-11 |
The simulated research of faint sinusoidal signal chaos detection |
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| YANG Hui,KONG Xiao-kun,GUO Yu-ping. The simulated research of faint sinusoidal signal chaos detection[J]. Journal of Xi'an Institute of Posts and Telecommunications, 2008, 13(1): 65-68 | |
| Authors: | YANG Hui KONG Xiao-kun GUO Yu-ping |
| Affiliation: | YANG Hui, KONG Xiao-kun, GUO Yu-ping (1. Department of Communication Engineering, Xi＇an University of Post and Telecommunications, Xi＇an 710121, China; 2. School of Communication Engineering, Xidian University, Xi＇an 710071 ,China; 3. School of Electronics and Information, Xi＇an Technological University, Xi＇an 710032,China) |
| Abstract: | The present paper covers a new time domain approach using the chaos oscillator to detect faint sinusoidal signal in noise.It analyzes the mathematical model of Duffing equation which is used to detect weak sinusoidal signal based on the change of phase trace,and focused the simulation of variable signals which have frequency difference with the referential signal.The result proves that: the oscillator is sensitive to the faint sinusoidal signal that without frequency difference with the referential signal,is not sensitive to the faint sinusoidal signal having frequency difference with the referential signal,and immune against the random noise to some extent. |
| Keywords: | weak signal detection duffing oscillator intermittent chaos |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
