战术数据链高精度时频同步技术  

High Precision Time-frequency Synchronization Technology For Tactical Data Link

作　　者：康荣雷[1] 班亚龙 王翔 常军[1] KANG Ronglei;BAN Yalong;WANG Xiang;CHANG Jun(Southwest China Institute of Electronic Technology,Chengdu 610036)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《舰船电子工程》2025年第3期72-76,共5页Ship Electronic Engineering

基　　金：装发十四五预研基金课题“某无人系统相对导航与定位技术”(编号:50911030202)资助。

摘　　要：论文为解决战术数据链网络内信号级协同作战对高精度时频的需求难题,设计了本地-绝对-相对三种同步运行的时间系统,用以统筹管理战术数据链网络内的时频同步系统。该技术采用北斗/数据链/时钟源的融合架构,通过构建时频同步卡尔曼滤波模型,联合处理北斗差分授时与数据链往返计时(Round Trip Timing,RTT)授时结果,实现数据链节点间的高精度时间和频率同步。仿真结果表明,在北斗可用时的相对时间同步精度可优于0.33 ns,频率同步精度优于2.3E-10,绝对时间同步精度优于2.3 ns;在北斗拒止时的时间同步精度优于3.58 ns,频率同步精度优于2.6E-9。In order to solve the problem of high precision time-frequency in signal-level cooperative operations in tactical da-ta link networks,a Local-Absolute-Relative synchronous time systems are designed in this paper.The time-frequency synchroniza-tion system in tactical data link network is managed as a whole.The time-frequency synchronization Kalman filter model is con-structed by using BDS/Data link/Clock fusion architecture.The simulation results show that,when the BDS system can be utilized for providing the timing information,the relative time synchronization precision and the absolute time synchronization precision,are better than 0.33 ns and 2.3 ns,respectively.Meanwhile,the frequency synchronization precision is better than 2.3E-10.On the oth-er hand,the time synchronization precision is better than 3.58 ns and the frequency synchronization precision is better than 2.6E-9 in BDS-denied environment.

关 键 词：战术数据链 时频同步 北斗拒止 卡尔曼滤波 

分 类 号：TN919[电子电信—通信与信息系统]