%0 Journal Article
%T Effects of time-periodic modulation of cross-correlation intensity between noises on stochastic resonance of over-damped linear system<br>噪声交叉关联强度的时间周期调制对线性过阻尼系统的随机共振的影响
%A Tian Yan
%A Huang Li
%A Luo Mao-Kang
%A <br>田艳
%A 黄丽
%A 罗懋康
%J 物理学报
%D 2013
%I 
%X For an over-damped linear system subjected to correlated additive and multiplicative noise and a periodic signal, when the cross-correlation intensity between noises is a time-periodic function, the analytical expression of the output signal-to-noise ratio (SNR) is derived by means of the stochastic averaging method. It is found that this system has richer dynamic behaviors than the linear systems in which cross-correlation intensity between noises is constant, that the evolution of the output SNR with the cross-correlation modulation frequency presents periodic oscillation, and that the parameters of cross-correlation intensity between noises diversify the stochastic resonance phenomena.The time-periodic modulation of cross-correlation intensity between noises is conductive to enhancing the sensitivity to weak periodic signal detection and implementing the frequency estimation of weak periodic signal.
%K stochastic resonance
%K periodic oscillation
%K cross-correlation intensity between noises
%K signal-to-noise ratio<br>随机共振
%K 周期振荡型共振
%K 噪声交叉关联强度
%K 信噪比
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=164B9414955546431BF70623C4D8FA37&yid=FF7AA908D58E97FA&iid=94C357A881DFC066&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0