摘要
混沌信号的非周期性连续宽带频谱,类似噪声的特性,使它具有天然的隐蔽性,因此近年来混沌同步及在保密通信中的应用受到了广泛的关注。混沌在保密通信中的应用具有强大的生命力,其关键技术是实现混沌的同步。本文论述了基于无刷式直流电机的混沌模型,同时利用状态观测器实现了发送端与接收端的同步;最后提出了基于无刷式直流电机的混沌同步保密通信系统模型,并通过仿真证明了该模型的有效性。
Chaotic signals＇ some characteristics make t^1hem have natural invisibility, for example, they have nonperiodic continuous broader frequency spectrum and they are similar to noise. So, recently, chaotic synchronization and its application for secure communications attract wide interest. Chaotic application for secure communications has strong vitality, and its key technique is to achieve chaotic synchronization. In the article, based on brushless DC motor chaotic model, the state observer is used to achieve the synchronization between sending end and receiving end. Besides, the model of chaotic secure communication scheme is established. The model＇s validity is proved by emulation.
出处
《科技通报》
2006年第6期841-845,共5页
Bulletin of Science and Technology
基金
省教育厅自然科学研究项目(02KJB630001)
关键词
混沌同步
状态观测器
保密通信
chaotic synchronization
state observer
, secure communications
