The simulated research of faint sinusoidal signal chaos detection
Guo Yu-ping · Journal of Xi'an University of Post and Telecommunications · 2008
The present paper covers a new time domain approach using the chaos oscillator to detect faint sinusoidal signal in noise.It analyzes the mathematical model of Duffing equation which is used to detect weak sinusoidal signal based on the change of phase trace,and focused the simulation of variable signals which have frequency difference with the referential signal.The result proves that: the oscillator is sensitive to the faint sinusoidal signal that without frequency difference with the referential signal,is not sensitive to the faint sinusoidal signal having frequency difference with the referential signal,and immune against the random noise to some extent.