Time-frequency representations-based detector of chaos in oscillatory circuits

Authors:
Vesna Rubežić;Igor Djurović;Miloš Daković
Affiliations:
University of Montenegro, Electrical Engineering Department, Montenegro, Serbia and Montenegro;University of Montenegro, Electrical Engineering Department, Montenegro, Serbia and Montenegro;University of Montenegro, Electrical Engineering Department, Montenegro, Serbia and Montenegro
Venue:
Signal Processing - Signal processing in UWB communications
Year:
2006

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Abstract

Detection of chaotic states in the nonlinear chaotic Chua's oscillatory circuit has been considered. A new approach, based on the concentration measure of the time-frequency (TF) representation, is proposed for determination of the current circuit state. Parameters of the proposed algorithm are studied in details. The algorithm is applied in the case of moderate noisy signal, as well as for breaking a chaotic communication scheme.