对混沌信号应用于语音保密通信系统存在问题的解决方案

混沌信号应用于语音保密通信系统的理论研究日趋成熟，但迟迟得不到很有效的应用，主要原因是混沌电路存在几个尚未解决的难题，如产生混沌信号的电路所需电源电压过高，无法应用于实际系统；混沌信号的频带较宽，在实际系统传输时，部分频率的信号被滤除，无法实现混沌同步等问题，阻碍了混沌应用于语音保密通信的进程。本文以陈氏电路语音加密系统为例，提出了解决上述问题的方案，并进行了软件模拟和硬件电路测试，有较高的实用价值。

Scheme to Deal with the Problems Existed in Voice Encryption Communication by Chaos Signal

Research about voice encryption communication using chaos becomes mature, but its application is not extensive. The main reason is that some unresolved problem existed in the chaos' circuit, such as high voltage battery and wide bandwidth of chaos signal. Those questions prevented chaos from being applied on real communication system. This paper puts forward two schemes to deal with them respectively, and the scheme is based on voice encryption system using Chen's circuit. The paper has some applicative value for industrialization of chaos encryption theory.