Weak Signal Detection Based on Chaotic Oscillator
Zongbing Lin · Journal of Hechi University · 2008
In this paper,the chaotic character of Duffing oscillator is analyzed and the principle of weak signal detection based on the change of phase trace is described.Simulation experiments show that the oscillator is sensitive to the small signal haying the tiny frequency difference with the referential signal and immune against the random noise and interference signal having larger frequency difference with the referential signa1.In addition,the simulation results based on MATLAB are given.The theory and simulation experiment show that the method above has many advantages such as feasible,simple,effective and easy to apply.