分布式卫星通信系统时间统一的设计与实现  

Design and implementation of time unification in distributed satellite communication system

作　　者：李娟娟 李淼 张宇航 Li Juanjuan;Li Miao;Zhang Yuhang(CEC Defense Technology Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]中电防务科技有限公司,江苏南京210000

出　　处：《无线互联科技》2022年第20期7-10,23,共5页Wireless Internet Technology

摘　　要：卫星通信系统由于其使用场景的特殊性,多为分布式部署且分布地域辽阔,从上层网络管理中心到末端终端的全部设备共同组成卫星通信系统。在多节点卫星通信系统中时间的统一尤为重要,节点间时间偏差过大会对事件显示、性能统计及系统管理造成影响,时间统一是全网所有设备正常工作的前提。文章从时钟源选型、时间同步模式选择、时间同步原理分析、时间统一软件设计和同步误差测试5个方面进行了阐述与设计,提出了一种兼顾可靠和高效的时间统一方案。Due to the particularity of its use scenario,satellite communication systems are mostly distributed and widely distributed.All equipment from the upper network management center to the end terminal form a satellite communication system.In multi node satellite communication system,time unification is particularly important.Excessive time deviation between nodes will affect event display,performance statistics and system management.Time unification is the premise of normal operation of all equipment in the whole network.This paper expounds and designs from five aspects:clock source selection,time synchronization mode selection,time synchronization principle analysis,time unification software design and synchronization error test,and puts forward a reliable and efficient time unification scheme.

关 键 词：卫星通信系统 多节点 时间统一 

分 类 号：TN927.2[电子电信—通信与信息系统]