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Multi-scroll chaotic signal generator based on cosine control

A chaotic signal and multi-scroll technology, which is applied in the direction of secure communication through chaotic signals, secure communication devices, digital transmission systems, etc., can solve problems such as low system dimension, poor system anti-deciphering ability, and insufficient key space

Active Publication Date: 2020-05-15
FOSHAN UNIVERSITY
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Problems solved by technology

Due to its low system dimension, the low-dimensional chaotic system has problems such as insufficient key space, low complexity of chaotic sequence, poor anti-deciphering ability of the system, and low security.

Method used

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  • Multi-scroll chaotic signal generator based on cosine control
  • Multi-scroll chaotic signal generator based on cosine control
  • Multi-scroll chaotic signal generator based on cosine control

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Embodiment 1

[0026] Embodiment 1, reference figure 1 and figure 2 , a multi-scroll chaotic signal generator based on cosine control, including: a basic chaotic signal generating circuit N1, a cosine function generating circuit N2, a sequence generator N3 for generating a switching control function, a node f and a multiplier MUL 4 .

[0027] Wherein, the basic chaotic signal generating circuit N1 includes: an operational amplifier OP 1 , operational amplifier OP 2 , operational amplifier OP 3 , operational amplifier OP 4 , operational amplifier OP 5 , operational amplifier OP 6 , operational amplifier OP 7 , operational amplifier OP 8 , operational amplifier OP 9 , resistance R 1 , resistance R 2 , resistance R 3 , resistance R 4 , resistance R 5 , resistance R 6 , resistance R 7 , resistance R 8 , resistance R 9 , resistance R 10 , resistance R 11 , resistance R 12 , resistance R 13 , resistance R 14 , resistance R 15 , resistance R 16 , resistance R 17 , resista...

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Abstract

The invention discloses a multi-scroll chaotic signal generator based on cosine control. The circuit comprises a basic chaotic signal generation circuit N1, a cosine function generation circuit N2, asequence generator N3, a node f and a multiplier MUL4, and the node x of the basic chaotic signal generation circuit N1 is connected with the input end of the cosine function generation circuit N2; the node z of the basic chaotic signal generation circuit N1 is connected with the input end of the sequence generator N3; the output end of the cosine function generation circuit N2 is connected with the first input end of the multiplier MUL4, the output end of the sequence generator N3 is connected with the second input end of the multiplier MUL4, and the output end of the multiplier MUL4 is connected with the input end of the basic chaotic signal generation circuit N1 through a node f. According to the method, multiple vortexes can be generated, the chaotic sequence complexity is higher, thekey space is larger, the system decoding resistance is higher, and the multi-scroll chaotic signal generator has better potential application value in the fields of secret communication, chaotic control and the like.

Description

technical field [0001] The invention relates to the technical field of chaotic communication, in particular to a multi-scroll chaotic signal generator based on cosine control. Background technique [0002] Since Lorenz discovered the first chaotic system in the 1960s, the chaotic system has been widely used in image encryption, information security and other fields because of its strong sensitivity and dependence on initial conditions and parameters, and unpredictability. s concern. As a deterministic random-like process in nonlinear dynamical systems, chaos has ergodic, mixed and exponential divergence. Due to its low system dimension, the low-dimensional chaotic system has problems such as insufficient key space, low complexity of chaotic sequences, poor anti-deciphering ability of the system, and low security. Contents of the invention [0003] The purpose of the present invention is to provide a multi-scroll chaotic signal generator based on cosine control to solve o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00
CPCH04L9/001Y02D30/70
Inventor 刘扬张朝霞林壮
Owner FOSHAN UNIVERSITY
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