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《Acta Electronica Sinica》 2009-01
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Design of Stochastic Resonance Systems in Weak Signal Detection

YE Qing-hua,HUANG Hai-ning,ZHANG Chun-hua (Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China)  
Stochastic Resonance(SR)is getting more and more attention in recent few years,as it can be used as a tool of using noise to enhance output signal-to-noise-ratio.One of the key problems is how to design a simple and efficient SR system.As for the weak signal detection,we analyzed two-state quantizers and two-state quantizer arrays,deduced the optimal two-state quantization detector and asymptotic optimal array SR detector,and gave out the designing criterion of asymptotic optimal array SR detector.According to the theoretical analysis,we designed a robust array SR detector and parameter selection algorithm based on noise sample collection,which can achieve good detection performance even the ambient noise is unknown.
【Fund】: 国家自然科学基金(No.60372105No.60602054No.60672118)
【CateGory Index】: TN911.23
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