机载B码时间同步架构及精度分析
Design and Implement for Precision Time Protocol Based on 88E1512
刘伟 1罗治斌1
作者信息
- 1. 中国西南电子技术研究所,四川 610036
- 折叠
摘要
阐述针对机载高精度时间同步需求,提出典型B码时间同步架构.该架构包括时间源、时间处理中心以及时间用户端.其中时间处理中心用于接收、同步、选择时间源信息,根据GJB2991编码输出B码时间,然后将B码时间分发到各用户端.分发精度由分发路径误差以及芯片处理误差决定.针对典型RS485芯片对B码时间分发精度进行分析和测试,结果表明B码时间分发精度优于10ns.
Abstract
This paper expounds the demand for high-precision airborne time synchronization and proposes a typical B-code time synchronization architecture.This architecture includes a time source,a time processing center,and a time user end.The time processing center is used to receive,synchronize,and select time source information,output B-code time based on GJB2991 encoding,and then distribute the B-code time to various user terminals.The distribution accuracy is determined by the distribution path error and chip processing error.The analysis and testing of the B-code time distribution accuracy for typical RS485 chips show that the B-code time distribution accuracy is better than 10ns.Keywords:intelligent control,formation collaboration,time synchronization,B-code,RS485.
关键词
智慧控制/编队协同/时间同步/B码/RS485Key words
intelligent control/formation collaboration/time synchronization/B-code/RS485引用本文复制引用
出版年
2024
NETL
NSTL
万方数据