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新型混沌系统的同步及在图像加密传输中的应用

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Keywords: 混沌系统,动力学行为,同步控制,图像加密传输

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Abstract:

提出一个新型四维四翼混沌系统,分析了参数变化时系统动力学行为的特性.基于分数阶混沌系统稳定性理论,设计合适的非线性反馈控制器,实现了初始值不同的整数阶与其分数阶混沌系统之间的同步.此外,利用改进的混沌掩盖通信原理,提出了一种新型图像加密传输方法,并将以上同步方案应用于图像加密传输中,在发送端使用整数阶混沌序列对图像加密传送,从接收端可以无失真地恢复出原始图像.数值仿真证实了新混沌系统的存在性以及同步控制应用的可行性.

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