| 二次采样随机共振频谱研究与应用初探 |
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| 引用本文： | 冷永刚,王太勇,秦旭达,李瑞欣,郭焱.二次采样随机共振频谱研究与应用初探[J].物理学报,2004,53(3):717-723. |
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| 作者姓名： | 冷永刚 王太勇 秦旭达 李瑞欣 郭焱 |
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| 作者单位： | (1)天津大学机械工程学院,天津 300072; (2)天津大学机械工程学院,天津 300072;中国煤炭经济学院计算机系,烟台 264005; (3)中国煤炭经济学院计算机系,烟台 264005 |
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| 基金项目： | 国家自然科学基金(批准号：50175081)和国家高技术研究发展计划(批准号：2002AA414420)资助的课题. |
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| 摘 要： | 研究了双稳系统随机共振频谱的洛伦兹分布特征，得出在谱分布能量较集中的低频区才能产生可辨识的随机共振谱峰. 探讨了大参数信号双稳系统的二次采样随机共振的频谱特性. 以强噪声中弱信号的检测为实例，阐述了二次采样随机共振技术的具体应用.
关键词：
随机共振
二次采样随机共振
双稳系统
频谱
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| 关 键 词： | 随机共振 二次采样随机共振 双稳系统 频谱 |
| 收稿时间： | 2003-04-15 |
Power spectrum research of twice sampling stochastic resonance response in a bistable system |
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| Leng Yong-Gang,Wang Tai-Yong,Qin Xu-D,Li Rui-Xin and Guo Yan.Power spectrum research of twice sampling stochastic resonance response in a bistable system[J].Acta Physica Sinica,2004,53(3):717-723. |
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| Authors: | Leng Yong-Gang Wang Tai-Yong Qin Xu-D Li Rui-Xin and Guo Yan |
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| Abstract: | The characteristics of Lorentzian distribution in the power spectrum of a stochastic resonance(SR) from a bistable system have been investigated, and then the viewpoint of producing an identifiable SR peak only at the lower frequency area where the power energy being concentrated has been proposed. With big values of parameters, the spectral properties of a twice sampling stochastic resonance(TSSR) from a bistable system is probed in detail. Take the detection of a weak signal overwhelmed in heavy noise as an example, the application of the TSSR technique is shown finally. |
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| Keywords: | stochastic resonance twice sampling stochastic resonance bistable system frequency spectrum |
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