| Stochastic resonance in parabolic—bistable potential system with an additive colour noise |
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| 引用本文： | 梁贵云.Stochastic resonance in parabolic—bistable potential system with an additive colour noise[J].中国物理 B,2003,12(4):377-380. |
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| 作者姓名： | 梁贵云 |
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| 作者单位： | National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China; Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 19975020). |
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| 摘 要： | We propose a new model (parabolic bistable system) with a colour noise source. In the presence of periodic input signal, we investigate the output signal to-noise ratio and the power spectral density of output signal, in which the self-correlation time may be an arbitrary value with no restriction. We find that the curves of signal-to-noise ratio versus the noise intensity D exhibits a bell-shape behaviour. The peak height increases with the increasing value of amplitude A_0 of the input signal. However, the position of peak does not shift. Moreover, the signal-to-noise ratio is insensitive to the modulation frequency Ω, which completely differs from result of Ref.6]. The power spectral density also has similar behaviour.
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| 关 键 词： | 随机振动 输入信号 输出信号 抛物型双稳态系统 周期信号 噪声比率 噪声源 功率谱密度 |
| 收稿时间： | 2002-10-18 |
Stochastic resonance in parabolic-bistable potential system with an additive colour noise |
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| Liang Gui-Yun.Stochastic resonance in parabolic-bistable potential system with an additive colour noise[J].Chinese Physics B,2003,12(4):377-380. |
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| Authors: | Liang Gui-Yun |
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| Institution: | National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China; Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100080, China |
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| Abstract: | We propose a new model (parabolic bistable system) with a colour noise source. In the presence of periodic input signal, we investigate the output signal to-noise ratio and the power spectral density of output signal, in which the self-correlation time may be an arbitrary value with no restriction. We find that the curves of signal-to-noise ratio versus the noise intensity D exhibits a bell-shape behaviour. The peak height increases with the increasing value of amplitude A_0 of the input signal. However, the position of peak does not shift. Moreover, the signal-to-noise ratio is insensitive to the modulation frequency Ω, which completely differs from result of Ref.6]. The power spectral density also has similar behaviour. |
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| Keywords: | stochastic resonance parabolic-bistable potential signal-to-noise ratio |
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