Design of Stochastic Resonance Systems in Weak Signal Detection
Chunhua Zhang · Dianzi xuebao · 2009
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.