Evaluation of an Asymmetric Bistable System for Signal Detection under Levy Stable Noise  

作　　者：HUANG Jia-Min TAO Wei-Ming XU Bo-Hou 黄家闽;陶伟明;徐博侯(Department of Mechanics,Zhejiang University,Hangzhou 310027)

机构地区：[1]Department of Mechanics,Zhejiang University,Hangzhou 310027

出　　处：《Chinese Physics Letters》2012年第1期38-40,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10972194 and 10932009.

摘　　要：We evaluate the performance of a typical asymmetric bistable system for detecting aperiodic signal under Levy stable noise.A Grünwald-Letnikov implicit finite difference method is employed to solve the fractional FokkerPlanck equation numerically.The noise-induced stochastic resonance(SR)and the parameter-induced SR both exist in the asymmetric bistable systems.The increase of the skewness parameterγmay deteriorate the system performance.However,by tuning the system parameters,the effects of asymmetry on the system performance can be reduced.

关 键 词：SYSTEM ASYMMETRIC PARAMETER 

分 类 号：O17[理学—数学]