Variance Based Identification of Phase Transition in Duffing Oscillator for Weak Signal Detection

Abstract:

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This paper studies the detection of weak signal detection using a Duffing Oscillator, which is sensitive to periodic signals but insensitive to noises. The system transits from chaotic to great periodic motion when coupled to the weak periodic signal to be detected. To efficiently determine the phase transition, a novel numerical criterion is proposed based on the sharp increase of variance when phase change happens. Simulation results verified the effectiveness of this method.

Info:

Periodical:

Edited by:

Zhixiang Hou

Pages:

354-358

DOI:

10.4028/www.scientific.net/AMM.128-129.354

Citation:

Y. Chang et al., "Variance Based Identification of Phase Transition in Duffing Oscillator for Weak Signal Detection", Applied Mechanics and Materials, Vols. 128-129, pp. 354-358, 2012

Online since:

October 2011

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Price:

$35.00

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