Stochastic resonance and its application to detection estimation of weak signals
Qinghua Liu · Journal of Guilin University of Electronic Technology · 2009
Under low signal-to-noise condition,the weak signal estimation will deviate.In order to estimate accurately,stochastic resonance was used in the algorithm of direction estimation.At first,the signal was obtained after stochastic resonance whose signal-to-noise had been enhanced.Secondly,the algorithm of direction estimation was used to estimate the direction.CBF,MVDR and MUSIC were used in simulation research with the weak sine wave and BPSK.The experiment results showed that applying stochastic resonance to direction estimation conformed to the theoretical analysis and enhanced the accuracy of the direction estimation of targets.