Different-dimensional switchable chaotic system design method and circuit

A chaotic system and design method technology, applied in the field of digital random sequence cryptography, can solve the problems of limited chaotic signals, inability to realize circuit switching between chaotic systems of different dimensions and ultra-chaotic systems, etc.
CN102332976AInactive Publication Date: 2012-01-25JIANGXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGXI UNIV OF SCI & TECH
Publication Date
2012-01-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a different-dimensional switchable chaotic system design method and a circuit; a four-dimensional hyper-chaos system is constructed by adding variables and feeding back control items based on a three-dimensional generalized Lorenz system family; and a switchable different-dimensional chaotic circuit is designed through a plurality of switch controllers in Multisim software. An analog circuit constructed by the invention is convenient to use and easy to realize by hardware, and has relatively lower cost; the designed switchable circuit not only can flexibly realize the switching between a three-dimensional chaotic system and the four-dimensional hyper-chaos system, but also can return to realize the switch among three chaotic systems in the same dimension; and the systems can serve as practical chaotic modulation and chaotic encryption signals, and can be widely applied to the field of information security cryptography with higher requirements on confidentiality and reliability.
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Description

technical field

[0001] The invention belongs to the chaotic synchronous control technology in nonlinear dynamics, in particular to the field of digital random sequence cryptography in information security cryptography. Background technique

[0002] Lorenz Equation was the first chaos model and became the paradigm of later chaos research. Positivity of classical low-dimensional chaotic systems Lyapunov The number of exponents is small, and the complexity of the system is not enough, which will be limited due to the narrow bandwidth in specific practical applications. A hyperchaotic system proposed by feedback extending the system dimension, with two or more positive Lyapunov The index, the phase space trajectory is separated in more directions, and its dynamic behavior is more complex, which can better meet the practical needs of spread spectrum, secure communication, and radar synchronization control. In recent years, researchers have carried out fruitful explorations ...

Claims

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