一种稳健的高速跳频信号实时侦察中的跳同步方法

A Robust Hop Synchronization Method of Real-time Reconnaissance for High-speed FH Signals

针对高速跳频系统的实时侦察技术,提出了一种快速、稳健的跳同步实现方法。该方法利用跳频信号各跳频率跳变的特点,采用局部门限比较和滑动调整的方式,实现了对高速跳频信号的非合作实时侦察跳同步,为后续的信号解调和信息分析奠定了基础。提出的方法结构简单,占用硬件资源少,便于工程实现,为侦察对抗装备的研制提供了依据。同时对于连跳等一些特殊情况,算法也能实现可靠同步,适用于宽带、窄带、信号带宽变化、信号能量起伏大等同步跳频系统。

A fast and robust hop synchronization method is presented in this paper as real-time reconnaissance technique for high-speed Frequency-Hopping（FH） system.This method used the way of comparison with local threshold and slide adjustment which is based on frequency changing characteristic,the hop synchronization of non-cooperative real-time reconnaissance for high-speed FH system is achieved.It lays foundations for subsequent signal demodulation and information analysis.Due to the compact arithmetic this method only requires small hardware resource and is easy to implement,besides,its useful for counter reconnaissance equipment engineering.The hop synchronization mechanism adapts to various bandwidths and high dynamic power range,also can be used to repeating frequency hopping.