电讯技术2025，Vol.65Issue(4)：596-601,6.DOI:10.20079/j.issn.1001-893x.240408002
一种基于小数延时滤波器的时间同步方法
A Time Synchronization Method Based on Fractional Delay Filter
摘要
Abstract
In the time division multiple access(TDMA)tactical data link communication system,the transmission delay jitter of terminal will result in the decrease of time synchronization accuracy.To solve this problem,a time synchronization method base on fractional delay filter is proposed.Firstly,the phase detection circuit is designed using hardware description language to obtain the baseband signal transmission delay.Then,the fractional delay filters are constructed by the Lagrange interpolation algorithm.After that,the phase detection circuit is combined with the fractional delay filters to compensate transmission delay.Finally,the method is implemented by field programmable gate array,and a real test environment is set up to verify the effectiveness of the proposed method.Experimental results show that this method can effectively solve the problem of transmission delay jitter and the time synchronization accuracy is improved by 4.6 ns.关键词
战术数据链通信系统/时分多址(TDMA)/往返校时/时间同步/小数延时滤波器Key words
tactical data link communication system/time division multiple access(TDMA)/round trip time/time synchronization/fractional delay filter分类
电子信息工程引用本文复制引用
李超..一种基于小数延时滤波器的时间同步方法[J].电讯技术,2025,65(4):596-601,6.
