中文摘要：

本文研究了一种具有三个恒等式的混沌系统间的相互同步问题。通过理论证明，给出了同步的条件；同时把这种新型的同步应用到保密通信中，设计了一种三级混沌同步保密通信系统。通过传输一个离散信号，验证了此系统的有效性。

英文摘要：

A global chaos synchronization scheme of three identical systems is investigated .With the support of relevant theories , gives the condition of synchronization .Applies this synchronization scheme to secure communi-cation, designs a three-grade chaos synchronization secure communication system .Transmits a discrete signal and proves the effectiveness and feasibility of the system .