短波跳频通信快速扫描式自同步方法

The Method of Quick Scanning Self-synchronization in Short-wave Hopping Communication

在研究了等待搜索式自同步方法的基础上 ,提出了适用于短波跳频通信的快速扫描式自同步方法 ,设计了实现该同步方法的系统原理框图 .本系统的关键是接收端频率合成器有两种工作状态 :跳频工作状态和快速扫描工作状态 .在同步捕获过程中 ,它工作于扫描状态 ,能较快地捕获到同步信息 .本文还对这种同步方法在缩短同步捕获时间和增强抗干扰性能方面进行了分析 ,分析结果表明其性能明显优于位移等待式自同步方法 .

This paper brought forward the method of quick scanning self_synchronization being adapted for the short_wave hopping communication based on the method of waiting and searching self_synchronization,and worked out the principle architrave of the system to realize it .The key of this system is that there are two working states of the frequency synthesizer in the reception part:hopping and quick scanning.During the process of synchronizing capturing,it works as scanning and can capture the synchronization information quickly.This paper also analyzed the efficiency and the capability of anti_interference of this method.The result of the analysis shows that its performance is better than the method of offset_waiting self_synchronization obviously.