Study on Double Exponential Chaotic System and Its Digital Implementation

In order to generate good chaotic cipher sequences,this paper designs a new chaotic system,which contains double exponentials.Dynamics behaviours of the proposed system are analyzed,and showing complex dynamical properties via analysis.NIST test for pseudo random sequences generated by the system is performed,and the test results show that its randomness is better than the chaotic system with single exponential.Finally,the system is implemented via digital signal processor,and the experiment is consistent with simulation results.The chaotic system can generate complex chaotic cipher sequences and can be used in chaotic secret communications and various information encryption.