Enhancement of Stochastic Resonance by Tuning System Parameters and Adding Noise Simultaneously

Abstract

The stochastic resonance effect can be realized by tuning system parameters or by adding noise. This paper investigates the possibility to enhance the stochastic resonance effect by tuning system parameters and adding noise simultaneously. First, we use some examples to demonstrate the situation where only the system parameters or noise can be adjusted for maximizing the stochastic resonance effect. Then, it is shown using standard optimization theory that the normalized power normal <C> of the bistable double-well system with a periodic input signal can reach a larger maximal value by tuning the system parameter and adding noise simultaneously. Finally, for the purpose of practical implementation, searching for the optimal system parameter and noise intensity is realized by an on-line fast-converging optimization algorithm.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2005
Accession Number
ADA460145

Entities

People

  • Daniel Repperger
  • Xingxing Wu
  • Zhong-Ping Jiang

Tags

Communities of Interest

  • Biomedical
  • Human Systems

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Communication Systems
  • Detection
  • Detectors
  • Engineering
  • Intensity
  • Military Research
  • Optimization
  • Physics
  • Resonance
  • Signal Detection
  • Signal Processing
  • Simulations
  • Standards
  • Target Detection

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Solar Physics