Title :
Method of weak signals detection based on array of stochastic resonance
Author :
Fan, Bin ; Hu, Niaoqing
Author_Institution :
Sch. of Mechatron. Eng. & Autom., Nat. Univ. of Defense Technol. (NUDT), Changsha, China
Abstract :
Based on the principle of Stochastic Resonance (SR), two models of weak signals detection - coupled array of stochastic resonance and uncoupled array of stochastic resonance are built. Through numerical simulation and computation, the influence of every parameter on system capability is analyzed. In addition, two models are compared with each other on signal-to-noise ratio gain. Simulation results show that the two models have better capability than the model of single SR oscillator, and uncoupled array is more effective than coupled array under a certain condition.
Keywords :
array signal processing; oscillations; resonance; signal detection; stochastic processes; stochastic resonance oscillator; uncoupled array; weak signals detection; Oscillators; Strontium; coupled array; signal-to-noise ratio gain; stochastic resonance; uncoupled array; weak signal detection;
Conference_Titel :
Prognostics and System Health Management Conference (PHM-Shenzhen), 2011
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4244-7951-1
Electronic_ISBN :
978-1-4244-7949-8
DOI :
10.1109/PHM.2011.5939590
