海上通信宽带高速跳频同步方法研究  

Research on broadband high-speed frequency hopping synchronization method for maritime communications

作　　者：李欣[1] 张渊 谢茂忠 LI Xin;ZHANG Yuan;XIE Mao-zhong(No.92728 Unit of PLA,Shanghai 200436,China;The 722 Research Institute of CSSC,Wuhan 430079,China)

机构地区：[1]中国人民解放军92728部队,上海200436 [2]武汉船舶通信研究所,湖北武汉430079

出　　处：《舰船科学技术》2023年第15期102-106,共5页Ship Science and Technology

基　　金：船舶工业国防科技预研基金资助项目(6141B04050101)。

摘　　要：本文设计一种适用于海上通信的宽带高速跳频信息同步方法,通过分析前导信号的结构,定时同步的基本构成。在定时粗同步方面采用了计算相关峰的方式,在定时精同步方面针对跳频图案和动态密钥完成定时的精确同步。为验证同步方法的正确性,在频域50%干扰下进行仿真,结果表明在-8dB信噪比的情况下,同步方法能达到很高的正确率,具有实用价值。This paper designs a broadband high-speed frequency hopping information synchronisation method applicable to maritime communications,by analysing the structure of the leading signal,the basic components of timing synchronisation.In the coarse synchronization of timing,the method of calculating correlation peaks is adopted,and in the fine synchronization of timing,the precise synchronization of timing is accomplished for frequency hopping paterns and dynamic keys.In order to verify the correctness of the synchronisation method,simulations are carried out in the frequency domain with 50%interference,and the results show that the synchronisation method can achieve a high correct rate with a signal-tonoise ratio of-8dB,which is of practical value.

关 键 词：跳频信息 信噪比 粗同步 精同步 

分 类 号：TN914.41[电子电信—通信与信息系统]