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Signal detection via residence times statistics: Noise-mediated minimization of the measurement error

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UNSPECIFIED (2003) Signal detection via residence times statistics: Noise-mediated minimization of the measurement error. PHYSICAL REVIEW E, 68 (3 Part 2). -. doi:10.1103/PhysRevE.68.036133

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Official URL: http://dx.doi.org/10.1103/PhysRevE.68.036133

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Abstract

We study the problem of detecting a small dc signal by quantifying its effect on the mean difference DeltaT in residence times in the stable steady states of a bistable dynamical measurement device, in the presence of a noise floor and a known time-sinusoidal bias signal. Errors in the measurement process occur due to a finite observation time that is present in most practical scenarios. The error is found to have a nonmonotonic dependence on the noise intensity; at a critical noise intensity, the error is minimized. This phenomenon, reminiscent of the well-known stochastic resonance effect, can also be obtained by adjusting the device tuning parameters for a given noise floor. The effect appears to be most pronounced for subthreshold bias signals in the strongly nonlinear response regime.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Journal or Publication Title: PHYSICAL REVIEW E
Publisher: AMERICAN PHYSICAL SOC
ISSN: 1063-651X
Official Date: September 2003
Dates:
DateEvent
September 2003UNSPECIFIED
Volume: 68
Number: 3 Part 2
Number of Pages: 4
Page Range: -
DOI: 10.1103/PhysRevE.68.036133
Publication Status: Published

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