Affiliation:
1. School of Physics and Electronic Information, Anhui Normal University 1 , 241002 Wuhu, China
2. Research Center of Health Big Data Mining and Applications, School of Medicine Information, Wannan Medical College 2 , Wuhu 241002, China
Abstract
The effect of a partial time delay on the response to external weak input signals in a bistable oscillator with anormal diffusive coupling was studied. Periodic resonance or anti-resonance in the signal response with time delay was observed, and the resonance period equals the period of the external input signal. Specifically, for the negative mean-field density parameter, the signal response can be improved through time delay, which is a resonance phenomenon. Conversely, for the positive mean-field density parameter, no such enhancement effect was observed, suggesting the presence of an anti-resonance phenomenon. As the probability of a partial time delay increases, the width of the time delay of the optimal signal response becomes narrower. When the probability of a partial time delay is large enough, the response of the system is optimal only when the time delay closely approximates integer or half-integer multiples of the external signal period. These numerical findings provide a new approach for weak signal detection that could be applied to the extraction of weak feature information within relevant fields.
Funder
University Natural Science Research Project of Anhui Province
Academic and Technical Leaders Candidate of Anhui Province
Scientific Research Foundation for Doctors of Wannan Medical College
Subject
General Physics and Astronomy