Stochastic resonance in parabolic-bistable potential system with an additive colour noise
Liang Gui-Yun (梁贵云)ab
a National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, China; b Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100080, China
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 A0 of the input signal. However, the position of peak does not shift. Moreover, the signal-to-noise ratio is insensitive to the modulation frequency $\varOmega$, which completely differs from result of Ref.[6]. The power spectral density also has similar behaviour.
Received: 18 October 2002
Revised: 25 November 2002
Accepted manuscript online:
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
