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中文摘要：
为了产生优良的混沌密码序列，该文设计了一个薪的含有两个指数结构的双指数混沌系统，对该混沌系统进行了动力学分析，并对该系统产生的伪随机序列进行了NIST测试，结果表明其随机性明显优于单指数混沌系统。最后用数字信号处理器对该系统进行了实现，实验结果与仿真结果完全相符。该混沌系统可产生复杂的混沌密码序列，应用于混沌保密通信和各种信息加密之中。
英文摘要：
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.
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