International Conference on Information Technology and Computer Science, 3rd (ITCS 2011)
42 Simulation and Experiment of Chaotic System for Detecting Weak Periodic Signal
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Taking advantage of the sensitive phase transformation from chaos to period in Duffing system, this paper realizes the weak periodic signal detection. The principle of detecting amplitude, frequency and phase of the signal is presented. Simulation and experiment is done to verify the effectiveness of the detection method. The method can also be applied to detect other periodic signals except for weak sinusoidal type.