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Bistable systems (BS) have been used in weak signal detection in the context of stochastic resonance (SR), where the BS is considered as a stochastic resonator and the detector is called BS-SR detector. To achieve a good performance, a tuning technique is often used to obtain the BS parameters. In this paper, we first show that BS detectors are sometimes wrongly termed as SR detectors. We then propose...
The research on stochastic resonance (SR) in threshold systems has received much attention recently, for multithreshold networks, SR is also observed in suprathreshold system. Generally suprathreshold SR (SSR) has been shown to exist by the mutual information and input-output cross-correlation. In this project, a novel method of ??maximum cross-correlation coefficient?? based on SSR was proposed to...
We put forward a new piecewise-linear stochastic resonance (SR) model for detecting the weak signal under the strong noise background. we show its description equations and haracter parameters. Through numerically simulating its performance under periodic signal and aperiodic signal respectively, we illustrate that this system is very helpful for detecting the weak signal under the strong noise background.
We present theorems and an algorithm to find optimal or near-optimal ldquostochastic resonancerdquo (SR) noise benefits for Neyman-Pearson hypothesis testing and for more general inequality-constrained signal detection problems. The optimal SR noise distribution is just the randomization of two noise realizations when the optimal noise exists for a single inequality constraint on the average cost...
In order to detect a weak periodic signal under the condition of intensive noise, the weak signal including strong background noise and adscititious multiplicative noise were used as input of a monostable stochastic resonance (SR) system. The adscititious noise intensity and the system parameter were adjusted adaptively with genetic algorithm by examining the SR effect on output signal-to-noise ratio...
We experimentally demonstrate phenomenon of stochastic-resonance in optical bistability from an optical ring cavity containing three-level (Lambda-type) rubidium atoms. The measured results match qualitatively with theoretical predictions of the generic model for the SR phenomenon.
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