Weak Signal Detection Based on Unidirectionaldriving Nonlinear Coupled Duffing Oscillator
Shiping Zhang · Science Technology and Engineering · 2011
Considering the huge computation and long time calculation in phase transition identification of weak signal detection based on single Duffing oscillator,a unidirectional driving nonlinear coupled Duffing oscillator system is established.System synchronization state from chaotic state to large-scale periodic state is analyzed according to transverse Lyapunov exponent,and a novel method for phase transition identification based on synchronization error is proposed.Experiment simulation shows that this coupled Duffing oscillator system can quickly detect weak signal in strong noise.