论文部分内容阅读
利用区间同步方案实现混沌保密通信是基于脉冲和语音信号有一些间隙或一些幅度相对弱的区间的特点．在发射端，对语音信号在时域内进行压缩使其出现幅度为０的一些区间，然后将脉冲信号或压缩后的语音信号对混沌信号进行调制．在接收端，利用约束同步和自由演化同步，将所传送的脉冲信号或语音信号从已调制的混沌信号中提取出来．最后，以Ｈｅｎｏｎ映射和Ｄｕｆｉｎｇ混沌系统为例子进行计算机模拟
The use of interval synchronization scheme to achieve chaotic secure communication is based on the pulse and the voice signal has some gaps or some of the characteristics of relatively weak amplitude range. At the transmitting end, the speech signal is compressed in the time domain to make it appear some intervals of amplitude 0, and then the pulse signal or the compressed speech signal is modulated on the chaotic signal. At the receiving end, the transmitted pulse signal or speech signal is extracted from the modulated chaotic signal by using constraint synchronization and free evolution synchronization. Finally, computer simulation is performed with Henon mapping and Dufing chaos system as an example