%0 Journal Article
%T A NEW METHOD TO RECOVER THE SIGNALS OBTAINED BY STOCHASTIC RESONANCE<br>随机共振系统输出的一种新的反演方法
%A Li Huafeng Xu Bohou
%A <br>李华锋
%A 徐博侯
%J 力学学报
%D 2003
%I 
%X Stochastic resonance (SR) is a counterintuitive phenomenon wherein the noise plays a constructive role in nonlinear dynamic systems, and it becomes a promising way of signal processing recently. Since most of the previous works concentrated on distorted simple-harmonic input and digital signals, we are tending to observe more signal processing features of SR by use of multi-frequency analog signals in this paper. It is difficult to recover the information in the output obtained by a SR system. But for simple input, i.e. the simple-harmonic analog signal and digital signal, there are some typical methods. When treating a multi-frequency analog signal, the recovery procedure becomes more complex. In this paper, we firstly discuss the reason why the output of a nonlinear system is distorted in detail. Based on this work, a new signal recovery method is suggested. The method includes a simple formula to restore the signal data, a linear interpolation in transient timeslice and a least square polynomial fitting to deal with the data obtained above. According to the simulation, this method gives good results when the system parameters are well selected.
%K stochastic resonance
%K nonlinear system
%K analog signal processing
%K output recover
%K multi-frequency signal<br>随机共振
%K 非线性系统
%K 模拟信号处理
%K 输出反演
%K 多频信号
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=4100DA4A1A3BA1B0CE5AD99AE1DFB420&aid=9F23137C80EBFEFB&yid=D43C4A19B2EE3C0A&vid=6209D9E8050195F5&iid=0B39A22176CE99FB&sid=5D9D6A8FC2C66FD8&eid=FEF02B4635FE8227&journal_id=0459-1879&journal_name=力学学报&referenced_num=0&reference_num=10