【摘要】 同步是跳频通信系统关键技术之一。针对超短波跳频通信系统中同步的需求,提出了一种跳频同步方法,利用时间信息划分同步时隙,采用自同步头法并利用跳频同步信息中携带的相关码和TOD信息,实现准确、快速的初始同步。主要研究了跳频同步信息格式、跳频图案同步、跳频跟跳等问题,并对其同步性能进行了分析。仿真结果表明该跳频通信系统的初始同步时间能够满足需求,并且在高斯白噪声信道以及战术信道具备良好的捕获概率。更多还原

【Abstract】 Synchronization is one of the key techniques to frequency-hopping(FH)communication.Based on the requests of synchronization for a VHF FH communication system,this paper puts forward a synchronization scheme,which is achieved accurately and rapidly by using a self synchronization-head method combined correlation code with time of day,which contains synchronous interval information.This paper mainly studies frame format of FH synchronization,synchronization of FH pattern,FH tracking,and so on.The performance of synchronization shows that the time of initial synchronization in FH communication system meets the requirements.In addition,simulation under the gauss white noise channel and tactical channel indicates that the system has high capture probability.更多还原