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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 ISSN 1063-651X.
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Official URL: http://dx.doi.org/10.1103/PhysRevE.68.036133
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 | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICAL REVIEW E | ||||
Publisher: | AMERICAN PHYSICAL SOC | ||||
ISSN: | 1063-651X | ||||
Official Date: | September 2003 | ||||
Dates: |
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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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