A Method of Realizing Sliding Mode Synchronous Secure Communication Based on Four-Dimensional Automatic Switching Chaotic System

A technology of automatic switching and chaotic systems, applied in transmission systems, digital transmission systems, secure communication devices, etc., can solve problems such as unpredictable and cracking

Inactive Publication Date: 2016-08-17
NANJING FOREST POLICE COLLEGE
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Problems solved by technology

However, many scholars have not deeply considered the impact of switching frequency on chaotic systems. If the switching frequency is a chaotic signal, the chaotic signal transmitted on the channel is more random, and it is more difficult to predict and crack

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  • A Method of Realizing Sliding Mode Synchronous Secure Communication Based on Four-Dimensional Automatic Switching Chaotic System
  • A Method of Realizing Sliding Mode Synchronous Secure Communication Based on Four-Dimensional Automatic Switching Chaotic System
  • A Method of Realizing Sliding Mode Synchronous Secure Communication Based on Four-Dimensional Automatic Switching Chaotic System

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Embodiment Construction

[0056] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0057] First, if Figure 9 As shown, the present invention proposes a method for realizing sliding mode synchronous secure communication based on a four-dimensional automatic switching chaotic system, including the following steps:

[0058] Step (1), design the following four-dimensional automatic switching system:

[0059] x · 1 = - 10 ( x 1 - x 2 ) + x 4

[0060] x · 2 = 28 x 1 + x 2 - ...

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Abstract

The invention discloses a method for realizing sliding mode synchronous secret communication based on a four-dimensional automatic switching chaotic system. This method first establishes a four-dimensional automatic switching chaotic system, and then uses the bifurcation diagram to analyze the dynamic characteristics of the four-dimensional automatic switching chaotic system, then analyzes and calculates the equilibrium point of the four-dimensional automatic switching chaotic system, and uses the Jacobian matrix to calculate the eigenvalues ​​and Corresponding Lyapunov exponent, so as to judge whether the four-dimensional automatic switching chaotic system is a chaotic system, and the phase space diagram of different switching frequencies of the chaotic state system; finally, based on the four-dimensional automatic switching chaotic system, a sliding mode synchronous controller is designed to realize the transmission signal modulation Synchronization of chaotic systems with automatic switching of the same structure. The experimental simulation results show that the method is effective, can recover the secret signal well, and has certain robustness.

Description

technical field [0001] The invention relates to a new type of four-dimensional automatic switching system analysis and a method for realizing secure communication, and specifically belongs to the technical field of chaos synchronous secure communication. Background technique [0002] Chaotic synchronous secure communication refers to the secret transmission of information under the premise of synchronous state of chaotic system. The performance of secure communication is directly related to chaotic signal, synchronization performance, anti-jamming and so on. There are many classical chaotic systems, and both the analysis of the dynamic characteristics of chaotic systems and the research on synchronous control have been thoroughly studied by scholars at home and abroad. In particular, the research on classical chaotic systems in secure communication is also very extensive, and many scholars have proposed related deciphering methods. To improve the performance of secure comm...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
Inventor 梅蓉
Owner NANJING FOREST POLICE COLLEGE
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