| 调频随机共振实现大参数信号检测 |
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| 引用本文： | 张良斌,张良英. 调频随机共振实现大参数信号检测[J]. 测控技术, 2009, 28(1) |
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| 作者姓名： | 张良斌 张良英 |
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| 作者单位： | 1. 襄樊学院机械工程系,湖北襄樊,441053
2. 襄樊学院物理与电子信息技术系,湖北襄樊,441053 |
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| 基金项目： | 湖北省教育厅重点科研基金 |
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| 摘 要： | 针对传统随机共振只适用于检测低频信号的约束,提出用被测信号和背景噪声调制频率的方法,实现在大参数情况下从强噪声中检测微弱信号.分析了调频信号的频谱,理论分析和数值仿真表明:此方法能降低噪声的有效强度,调频信号中含有的低频分量能产生明显的随机共振.
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| 关 键 词： | 随机共振 频率调制 背景噪声 频谱 |
Frequency Modulation Stochastic Resonance to Achieve the Parameters of Signal Detection |
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| ZHANG Liang-bin,ZHANG Liang-ying. Frequency Modulation Stochastic Resonance to Achieve the Parameters of Signal Detection[J]. Measurement & Control Technology, 2009, 28(1) |
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| Authors: | ZHANG Liang-bin ZHANG Liang-ying |
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| Affiliation: | 1.Department of Mechanical Engineering;Xiangfan University;Xiangfan 441053;China;2.Department of Physics & Electronics Information Technology;China |
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| Abstract: | To break the restraint of the traditional stochastic resonance only to detect low frequency signal,the method which uses the detected signal and background noise modulating frequency is proposed to realize that the weak signal can be distinguished from the strong noise in the case of big parameter.The spectrum of the signal by frequency modulation is analyzed.Theoretical analysis and numerical simulation declare that the method can lower the intensity of the noise,and the low frequency quantity of the signa... |
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| Keywords: | stochastic resonance frequency modulation background noise spectrum |
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