Method and system for generating ultra-chaos signal

Abstract

The invention relates to the technical field of secure communication, in particular to a hyper-chaotic signal generating method and a generating system thereof, wherein the hyper-chaotic signal generating method comprises the following steps: a sinusoidal signal is input to a non-linear circuit which can generate the hyper-chaotic signal, thereby changing the state equation parameter of the non-linear circuit which can generate the hyper-chaotic signal and causing at least two lyapunov indexes of a chaotic system to be larger than 0; the hyper-chaotic signal generating system comprises the non-linear circuit which can generate the hyper-chaotic signal and also comprises a sinusoidal signal generating device connected with a signal input end of the non-linear circuit which can generate the hyper-chaotic signal, and sinusoidal signal generating device outputs the sinusoidal signal to the non-linear circuit which can generate the hyper-chaotic signal, thereby changing the state equation parameter of the non-linear circuit which can generate the hyper-chaotic signal and causing the at least two lyapunov indexes of the chaotic system to be larger than 0.

Description

technical field [0001] The invention relates to the technical field of secure communication, in particular to a method and system for generating hyperchaotic signals. Background technique [0002] Since the discovery of the first chaotic model by Lorenz in 1963, chaotic dynamics has achieved significant development in the field of nonlinear research. [0003] The reason why chaos can be used for digital information encryption is that the chaotic motion has the following characteristics: 1) The trajectory of the motion is extremely sensitive to the initial value, and the trajectory starting from any two points close to it is unpredictable; 2) The chaotic motion is neither periodic nor convergent. The points on the motion trajectory traverse the entire area; 3) The continuous expansion and folding of the motion trajectory in a limited area makes the system output a phenomenon similar to random noise. But for the ordinary chaotic system, the hyperchaotic system has two or more...

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Problems solved by technology

[0004] But now, super-chaos is obtained by adding a state feedback controller containing a potentiometer to the continuous chaotic system, which not only makes the circuit system more complicated, but also adjusts the potentiometer to easily overshoot or undershoot, making the actual obtained There is a certain error between the resistance value and the ideal resistance value

[0005] For example, the Chinese invention patent application publication with the publication number CN25433620Y provides a method for generating digital chaos, which generates a chaotic signal by setting the initial value and equation for calculation, but cannot generate a super chaotic signal, nor can it change the output at any time Signal

And publication number is that the Chinese invention patent application announcement specification of CN101145901A provides a kind of generation method of hyperchaos, but it can only produce hyperchaos in fixed hyperchaos mapping equation, and only changes hyperchaos by setting different initial values output, and cannot serve the purpose of controlling the hyperchaotic system

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