a School of Architectural Engineering and Mechanics, Xi'an Jiaotong University, Xi'an 710049, China; b The Air Force University of Engineering, Xi'an 710038, China ; c School of Telecommunication Engineering, Xidian University, Xi'an 710071, China; d University of Electronic Science and Technology, Chengdu 610054, China
Abstract We study the synchronizing sensitive errors of chaotic systems for adding other signals to the synchronizing signal. Based on the model of the Henon map masking, we examine the cause of the sensitive errors of chaos synchronization. The modulation ratio and the mean square error are defined to measure the synchronizing sensitive errors by quality. Numerical simulation results of the synchronizing sensitive errors are given for masking direct current, sinusoidal and speech signals, separately. Finally, we give the mean square error curves of chaos synchronizing sensitivity and three-dimensional phase plots of the drive system and the response system for masking the three kinds of signals.
Received: 26 April 2001
Revised: 17 June 2001
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10172094), the Foundation of the National Defence Science and Technology Key Laboratory (Grant No. 51436) and the Doctor Foundation of Xi'an Jiaotong University (Grant No. DF
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