一种基于线性系统随机共振的弱信号检测方法  

Weak signal detection method based on linear system with stochastic resonance

作　　者：孙万麟[1] 黄玉划[2] 赵丽[3] 

机构地区：[1]昌吉学院物理系,新疆昌吉831100 [2]南京航空航天大学信息科学与技术学院,江苏南京210016 [3]新疆大学信息学院,新疆乌鲁木齐830046

出　　处：《黑龙江工程学院学报》2010年第1期53-56,共4页Journal of Heilongjiang Institute of Technology

摘　　要：从工程中经常碰到的噪声背景下弱信号检测的实际需求出发,提出一种基于线性系统随机共振的弱信号检测方法,与传统的非线性系统随机共振相比,此方法计算量小、检测速度快。采用MATLAB配用的SIMULINK软件,建立线性系统随机共振仿真模拟图,通过调节系统参数或噪声强度,使系统噪声及激励信号达到最佳匹配,从而实现弱信号的检测。仿真结果表明该方法具有可行性。Articles from engineering noise often encountered in the context of the actual needs of the weak signal detection, so this paper proposes a linear system based on stochastic resonance in weak signal detection methods. Compared with the traditional stochastic resonance of nonlinear systems, the method has a small amount of testing speed. Articles uss MATLAB with SIMULINK software used in the establishment of stochastic resonance in linear system simulation diagram, by adjusting the system parameters or noise intensity, the system noise and the excitation signal to achieve the best match, in order to achieve weak signal detection. The simulation results show that the method is feasible.

关 键 词：线性系统随机共振 弱信号 噪声 检测 仿真 

分 类 号：TN911.23[电子电信—通信与信息系统]