Five-dimensional chaotic system and chaotic signal generator based on five-dimensional chaotic system

A chaotic system and chaotic signal technology, applied in transmission systems, digital transmission systems, safety communication devices, etc., can solve problems such as difficulties in the implementation of application systems

Inactive Publication Date: 2014-03-12
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some applications, if the chaotic system is realized by analog devices, it is difficult to realize the application system due to factors such as the discreteness (not strictly matching) of t

Method used

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  • Five-dimensional chaotic system and chaotic signal generator based on five-dimensional chaotic system
  • Five-dimensional chaotic system and chaotic signal generator based on five-dimensional chaotic system
  • Five-dimensional chaotic system and chaotic signal generator based on five-dimensional chaotic system

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specific Embodiment approach 1

[0026] Specific implementation mode one: as figure 1 As shown, this embodiment is described in detail for a five-dimensional chaotic system proposed by the present invention:

[0027] 1. The mathematical model of the five-dimensional chaotic system is

[0028] x · 1 = - ax 1 + bx 5 - x 4 x 5 , x · 2 = ...

specific Embodiment approach 2

[0085] Specific implementation mode two: as Figure 12 ~ Figure 13 As shown, this embodiment provides a chaotic signal generator based on the above-mentioned five-dimensional chaotic system. The chaotic signal generator includes a power supply circuit, an FPGA, a clock circuit, a reset circuit, an ASP download interface, a JTAG download interface, a dial code switch, the first digital-to-analog converter (DAC1), the second digital-to-analog converter (DAC2), the third digital-to-analog converter (DAC3), the fourth digital-to-analog converter (DAC4), the fifth Digital-to-analog converter (DAC5); FPGA is used to generate five-dimensional chaotic system circuit, power supply circuit is used to supply power to FPGA and digital-to-analog converter; clock circuit is used to provide clock signal for FPGA; reset circuit is used to reset FPGA; FPGA It is connected with ASP download interface and JTAG download interface; the five chaotic signal output terminals of FPGA are respectively ...

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Abstract

The invention discloses a five-dimensional chaotic system and a chaotic signal generator based on the five-dimensional chaotic system, and relates to the information encryption field. The five-dimensional chaotic system provided by the invention is small in quantity of occupied digit circuit multiplying units, easy to implemented and large in chaotic system parameter range, so that complex chaotic signals are obtained, and the information encryption safety is improved. The five-dimensional chaotic system is used for inputting five chaotic signals and has typical chaotic attractors. An FPGA (Field Programmable Gate Array) in the chaotic signal generator is used for generating a five-dimensional chaotic system circuit, and the five chaotic signal output ends are respectively connected with the digital signal input ends of first, second, third, fourth and fifth digital analog converters. One end of a dial switch is connected with a power supply while the other end of the dial switch is respectively connected with the power supply ends of the five digital analog converters. The signals output by the five digital analog converters are voltage signals. The chaotic signal generator can provide a five-dimensional chaotic signal source which has various association of variation, is used for information encryption and has good chaotic characteristics.

Description

technical field [0001] The invention relates to a five-dimensional chaotic system and a chaotic signal generator used in the field of security communication security and chaotic digital communication, and relates to the fields of information encryption and the like. Background technique [0002] The construction and analysis of the chaotic system is a hot research topic at home and abroad. There are two main types of chaotic systems: discrete chaotic systems and continuous systems. For the chaotic research of discrete dynamical systems, a set of rigorous theories and methods has been formed in mathematics, but it is more difficult for the generation of continuous chaotic systems, and it is not easy to generate a completely new chaotic system. A typical discrete chaotic system has a one-dimensional parabolic map (Logistic map) and a two-dimensional Henon map. There are many continuous chaotic systems, typical ones are generalized Lorenz system family, Rossler system, Chua s...

Claims

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Application Information

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IPC IPC(8): H04L9/00
Inventor 康守强朱建良王玉静张建广宋立新梁欣涛
Owner HARBIN UNIV OF SCI & TECH
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