Producing device and producing method of multi-scroll chaotic signals

Abstract

The invention provides a producing device of multi-scroll chaotic signals, which can produce multi-scroll chaotic signals without nonlinear circuit. The device comprises a chaotic producing equation storage module, a numerical solution module, a simulation converting module and a D / A converting module, wherein one or a plurality of differential equations are stored in the chaotic producing equation storage module; the numerical solution module is used for performing numerical solution on the differential equation capable of producing the multi-scroll chaotic signals; the simulation converting module is used for converting the numerical value obtained through the numerical solution module, so as to obtain simulation chaotic signals; and the simulation chaotic signals obtained by the simulation converting module are converted into electrical signals through the D / A converting module. The invention further discloses a method for producing the multi-scroll chaotic signal; the invention ensures that the solving of the differential equation capable of producing the multi-scroll chaotic signal though soft wares is achieved through software and the obtained value is finally converted into the electrical signal, and has the advantages of simple structure and easy implementation.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a chaotic signal generation device and generation method. 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. [0003] The Chinese Invention Patent Application...

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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] The Chinese Invention Patent Application Publication No. CN101183929 discloses a kind of chaotic circuit and its realization method that produces multi-surrounding coil waves, and the Chinese Invention Patent Application Publication No. CN1747377A also discloses a kind of scroll chaos Signal generators and their usage methods, although the devices and methods recorded in these existing literatures have made actual circuits, due to the sensitivity of the initial value and circuit parameters, the circuit debugging is extremely complicated, and it is very difficult to generate multiple system spiral chaotic signals , the practical application value is low

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