Weak signal detection method based on Lu system

A weak signal detection, weak periodic signal technology, applied in nonlinear system models, chaotic models, etc., can solve problems such as poor identification and change, and achieve the effects of high detection reliability, convenient implementation, and intuitive detection methods.

Inactive Publication Date: 2015-07-08
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology

In the field of weak signal detection, the chaotic system has some unique advantages. The method of using the chaotic system for weak signal detection at home and abroad mainly uses the Duffing system, and judges the presence of weak signals according to the change of the Duffing system from the chaotic state to the large-scale periodic state. , but based on the Duffing system weak signal detection state change is not easy to identify

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  • Weak signal detection method based on Lu system
  • Weak signal detection method based on Lu system
  • Weak signal detection method based on Lu system

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0022] The Lü system eq...

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Abstract

The invention discloses a weak signal detection method based on a Lu system and relates to the technical field of signal detection methods. The method comprises the following steps that parameters of the Lu system are set to be a=36 and b=3; the value of a parameter c is determined, wherein the value of c is a critical value at which the Lu system is in a fixed point state, the value of c is determined through an equation and regulated from small to large, changes of an output y and a phase space of the Lu system are observed in the regulating process, and the value at which the fixed point state of the Lu system changes is used as the value of c; weak periodic signals are monitored through the Lu system with the determined parameters, and if a phase track is not in the fixed point state, it is judged that the weak periodic signals exist. According to the method, the Lu system is adopted, so that weak signals are recognized more easily, and the reliability is higher.

Description

technical field [0001] The invention relates to the technical field of signal detection methods, in particular to a weak signal detection method based on the Lü system. Background technique [0002] With the development of science and technology, the demand for detection of weak signals is becoming increasingly urgent. Detection of weak signals is an important means for developing high-tech, exploring and discovering new natural laws under extreme conditions, and is very important for promoting national economy, national defense construction and environmental protection issues. The development of related fields is of great significance. In a sense, weak signal detection is a technology dedicated to fighting against noise, that is, the rapid, accurate and high-sensitivity acquisition and processing of weak signals under strong noise is an emerging discipline for extracting useful signals from noise . [0003] Weak signal not only means that the amplitude of the signal is ve...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06N7/08
Inventor 杨绍普赵志宏封全保刘永强马新娜张建超
Owner SHIJIAZHUANG TIEDAO UNIV
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