Implementation Of Offset-Boostable Chaotic Oscillator On Circuit And Its Application In Secure Communication

With the development of information and communication technology,human information transmission has also grown rapidly.Therefore,the security of communication technology has also become an important consideration for the transmission of information between people.As a complex nonlinear phenomenon,chaos plays a vital role in secure communication due to its class-like randomness,initial value sensitivity,aperiodicity,continuous bandwidth spectrum and unpredictable trajectory.Applied research hotspots.The purpose of this paper is to give a design method of such chaotic oscillation circuit by analyzing the dynamic characteristics and circuit design of the bias controllable chaotic system,and further explore its application value in the secure communication system.Here are the main tasks of this article:A typical bias controllable chaotic system model is studied.The stability and dissipative stability of the system are analyzed.The parameters and initials of the system are analyzed by using Lyapunov exponent spectrum,bifurcation diagram and attraction domain.The effect of conditions on system dynamics.The analysis shows that the system has the characteristics of constant Lyapunov exponential spectrum under partial amplitude adjustment and offset operation.The bias control parameters also enable the polarity adjustment of the chaotic signal output by the system.Based on the dynamic equation of the bias controllable chaotic system,the state equation of the chaotic system is designed based on the analog circuit method.The schematic diagram of the bias controllable chaotic oscillation circuit is given.The expected simulation results are obtained and the circuit design is verified.The correctness.On the other hand,based on the digital circuit method,a suitable discretization algorithm is selected to construct the discrete equation,and the bias controllable chaotic oscillation circuit is realized on the digital device,and the corresponding chaotic signal is displayed on the oscilloscope.Finally,the application of bias controllable chaotic systems in secure communication is studied.Firstly,the bias control of chaotic signals is introduced to introduce the chaotic signal to be switched between bipolar and unipolar.Secondly,based on the system analysis,a new synchronization model is constructed and the synchronization scheme is given.Then the biasis studied.The application technology of the controllable chaotic signal in the secure communication system.The experimental results on the digital integrated platform are consistent with theoretical analysis and numerical simulation,which proves the effectiveness of the bias controllable chaotic system applied to chaotic masking.