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A Stochastic Resonance Weak Signal Detection Method

A weak signal detection, stochastic resonance technology, applied in the measurement of resonant frequency, measurement device, measurement of ultrasonic/sonic/infrasonic waves, etc., can solve problems such as firefly algorithm crowding

Active Publication Date: 2020-09-18
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the defects existing in the existing chaotic variable step-size firefly optimization algorithm, and provide an improved algorithm that can solve the congestion problem of the firefly algorithm when searching for optimization.

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  • A Stochastic Resonance Weak Signal Detection Method
  • A Stochastic Resonance Weak Signal Detection Method
  • A Stochastic Resonance Weak Signal Detection Method

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Embodiment Construction

[0058] The present invention will be described in detail below in conjunction with specific embodiments.

[0059] The stochastic resonance weak signal detection method based on the chaotic variable step-size firefly optimization algorithm of tail-tracking behavior in the present invention is to substitute the optimized parameters obtained by the chaotic variable-step-size firefly optimization algorithm of tail-tracking behavior into the two-dimensional Duffing driven by α-stable noise In the oscillator stochastic resonance system, stochastic resonance is realized to detect weak signals. Among them, PCVSGSO is an improved firefly optimization algorithm using chaotic search, which updates luciferin according to the fitness of each firefly, thereby adjusting the evolutionary search ability and completing the search for fireflies with the best performance. The flow chart of the stochastic resonance weak signal detection method based on PCVSGSO is as follows figure 1 As shown, the...

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Abstract

The invention discloses a stochastic resonance weak signal detection method. According to the stochastic resonance weak signal detection method, the structure optimal parameters of the stochastic resonance system are searched through the chaotic variable step firefly optimization algorithm of the rear-end behavior to be submitted in a two-dimensional Duffing oscillator system so as to realize stochastic resonance, detect the weak periodic signal of the signal to be detected, output the maximum signal-to-noise ratio and detect the weak signal under the non-Gaussian noise background. The shoal rear-end behavior, chaotic and variable step operation are introduced to the firefly algorithm to solve the problem of crowding in optimization of the firefly algorithm and obtain the global optimal solution within a small scale through fast convergence so as to have the advantages of high optimization capacity, high convergence rate and high convergence accuracy.

Description

technical field [0001] The invention belongs to the field of weak signal detection, and in particular relates to a stochastic resonance weak signal detection method based on a firefly optimization algorithm with chaotic variable step size of rear-end chasing behavior. Background technique [0002] In the field of practical engineering applications, weak signal detection under strong noise background has always been a research hotspot for researchers at home and abroad. The so-called weak signal detection is to effectively filter or suppress noise through a series of signal processing methods. The purpose is to improve the output signal signal. Noise ratio, the technology to detect weak characteristic signals in the background of strong noise, has the problem of dealing with weak signals and noise in the fields of communication, physics, chemistry, biomedicine, remote sensing and materials science. Therefore, effectively improving the output signal-to-noise ratio is the prima...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H13/00G06N3/00
CPCG01H13/00G06N3/006
Inventor 行鸿彦韩杰
Owner NANJING UNIV OF INFORMATION SCI & TECH