中国物理B ›› 2003, Vol. 12 ›› Issue (4): 381-388.doi: 10.1088/1009-1963/12/4/307
牟静, 陶超, 杜功焕
Mu Jing (牟静), Tao Chao (陶超), Du Gong-Huan (杜功焕)
摘要: In this paper we propose and investigate the synchronization of a new chaotic model with time-varying parameters and apply it to improve the security of chaotic communication. In this model, the chaotic system is modulated by both the message and the varying parameters. The varying parameters distort the phase space so heavily that they prevent the carrier from being broken by nonlinear dynamic forecasting method. Theory and simulation experiments with speech signal communication indicate that the receiver can gain a perfect synchronization with the transmitter, and the intruder cannot break down this communication system. We also discuss the robustness of the new communication system.
中图分类号: (Synchronization; coupled oscillators)