中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2373-2376.doi: 10.1088/1674-1056/17/7/009
王云才, 赵清春, 王安帮
Wang Yun-Cai(王云才)†, Zhao Qing-Chun(赵清春), and Wang An-Bang(王安帮)
摘要: This paper presents a novel approach to extract the periodic signals masked by a chaotic carrier. It verifies that the driven Duffing oscillator is immune to the chaotic carrier and sensitive to certain periodic signals. A preliminary detection scenario illustrates that the frequency and amplitude of the hidden sine wave signal can be extracted from the chaotic carrier by numerical simulation. The obtained results indicate that the hidden messages in chaotic secure communication can be eavesdropped utilizing Duffing oscillators.
中图分类号: (Communication using chaos)