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以超混沌电感电容(LC)振荡电路模型为对象,提出了一种线性和非线性混合反馈同步通信方案。通过设计李雅普诺夫函数对系统同步的稳定性进行了理论分析,得出了稳定状态下系统反馈强度的临界值。同时,基于线性和非线性混合反馈同步方式,研究了信号的注入式混沌保密通信方法。该方法不仅增强了通讯的保密性,而且对噪声有较强的鲁棒性,因而具有较好的工程应用价值。
Aiming at hyperchaotic LC (Inductance-Capacitance) oscillating circuit model, a linear and non-linear hybrid feedback synchronous communication scheme is proposed. Through the design of Lyapunov function, the stability of the system synchronization is theoretically analyzed, and the critical value of the system feedback strength under steady state is obtained. At the same time, based on the linear and non-linear hybrid feedback synchronization method, the signal injection chaotic secure communication method is studied. This method not only enhances the confidentiality of communication, but also has strong robustness to noise, so it has better engineering application value.