Three-dimensional multi-scroll chaotic signal generator

Abstract

The invention discloses a three-dimensional multi-scroll chaotic signal generator. The generator comprises a basic chaotic signal generation circuit N1, a sequence generator N2 used for generating a switching control function f1(x, xi) and a sequence generator N3 used for generating a switching control function f2(y). An output terminal of the basic chaotic signal generation circuit N1 is connected to input terminals of the sequence generator N2 and the sequence generator N3 respectively. Output terminals of the sequence generator N2 and the sequence generator N3 are connected to an input terminal of the basic chaotic signal generation circuit N1. After effects of the sequence generator N2 and the sequence generator N3, a three-dimensional multi-scroll chaotic signal can be acquired; the sequence generator generating the switching control function is adopted to the circuit so that hardware of a composite chaotic signal generator is easy to realize and chaotic encryption performance is high.

Description

technical field [0001] The invention relates to the field of chaotic secure communication, in particular to a three-dimensional multi-scroll chaotic signal generator based on a switching control function. Background technique [0002] After the chaos phenomenon has been paid attention to, people have gradually discovered the characteristics of chaotic signals such as sensitivity to initial values, randomness, and continuous broadband power spectrum. These characteristics make chaos widely used in various fields such as communication coding and security. At present, nonlinear circuits are usually used to generate chaotic signals, but due to the initial value sensitivity and parameter sensitivity of chaos, it is difficult to select the circuit parameters that can generate the required signals, and the circuit parameters inevitably have fluctuations, and the circuit devices are bound to have noise. , so it is difficult to obtain a chaotic signal with better performance. [000...

AI Technical Summary

Problems solved by technology

At present, nonlinear circuits are usually used to generate chaotic signals, but due to the initial value sensitivity and parameter sensitivity of chaos, it is difficult to select the circuit parameters that can generate the required signals, and the circuit parameters inevitably have fluctuations, and the circuit devices are bound to have noise. , so it is difficult to obtain a chaotic signal with better performance

[0003] At present, how to generate various chaotic circuits and use them in chaotic secure communication is a new research field of nonlinear circuits and systems in recent years. Chinese patent authorization announcement No. CN102694643A discloses a chaotic signal generation method, given A method of generating chaos through a linear switching system is proposed, and a new type of chaos generator is designed, which is characterized by a simple mathematical model, easy to implement, and can generate chaos on a wide range of parameter scales, but the disadvantage is that it produces The chaotic signal only contains a single attractor, and the randomness is not strong enough; the patent document of the Chinese patent authorization announcement number ZL201210129556.1 discloses a compound chaotic signal circuit, but there are still relatively few three-dimensional multi-scroll chaotic systems, so it is used for chaotic security Communication is still limited

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