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Method for detecting weak periodic signals under strong noise background in chaotic synchronization mode

A weak periodic signal and chaotic synchronization technology, which is applied in the direction of error detection/prevention using signal quality detectors, can solve problems such as misjudgment, a large amount of time and calculation, and achieve the goal of avoiding complex solutions, accurately judging standards, and realizing measurement Effect

Active Publication Date: 2015-06-24
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the detection of signals by existing chaotic detection technology depends on the occurrence of chaotic state. The existing detection technology may misjudge the judgment of operating state, and usually requires a lot of time and calculation, which is difficult to meet the needs of practical applications.

Method used

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  • Method for detecting weak periodic signals under strong noise background in chaotic synchronization mode
  • Method for detecting weak periodic signals under strong noise background in chaotic synchronization mode
  • Method for detecting weak periodic signals under strong noise background in chaotic synchronization mode

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the implementation and protection of the present invention are not limited thereto. If there are no specific details below, those skilled in the art can refer to the prior art.

[0026] As an example, the following is a detailed description of the implementation of a chaotic synchronous detection system constructed with a Chua circuit in combination with a method for synchronously detecting weak periodic signals in a strong noise environment, but the implementation and protection scope of the present invention are not limited thereto.

[0027] refer to figure 1 As shown, a weak signal detection method based on chaos synchronization takes Chua circuit as an example, including the following steps:

[0028] S10, according to the chaos synchronization system built by Chua circuit, among the present invention, the method for building chaos synchro...

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Abstract

The invention provides a method for detecting weak periodic signals under a strong noise background in a chaotic synchronization mode. The method comprises the following steps that a self-adaption chaotic synchronization signal detection system is constructed; reference signals are introduced in the driving end and the response end of a chaotic synchronization system; relevant parameters of the system are adjusted, and the driving end and the response end run in a chaotic state; signals to be detected are introduced in the driving end of the chaotic synchronization system, adjusting signals are introduced in the response end, and the running state of the synchronization system is determined; parameter correction is carried out according to the synchronization error of the driving end and the response end, and the amplitude values of the weak periodic signals to be detected are determined. The influence of noise and other factors to signal detection is lowered, the state can be judged fast and accurately, and approaches the periodic signals submerged in the noise, and detection precision and efficiency are effectively improved.

Description

technical field [0001] The invention relates to the technical field of signal detection, in particular to a method for detecting weak periodic signals through chaos theory and synchronous control theory. Background technique [0002] The chaos method detects weak signals based on the chaos system, which uses its extreme sensitivity to the initial value, immunity to zero-mean noise, and nonlinear amplification characteristics for signal processing. It can be regarded as a signal amplifier with extremely strong denoising ability and infinite amplification factor, which can achieve lower detection limit of lower signal-to-noise ratio and lower cost. The essence of research on the method of chaos detection weak signal is to analyze and utilize the characteristics of the chaotic state of the system and the operating state of the control and detection system. These characteristics of the chaotic system in signal processing can well solve the problems of various weak signals that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/20
Inventor 张波李国正谢帆丘东元
Owner SOUTH CHINA UNIV OF TECH
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