光网络高精度授时体系建设策略研究  

Research on construction strategy of optical network high precision time service system

作　　者：李恩[1] 宋文忠 罗青松[1] 钟震林 LI En;SONG wenzhong;LUO Qingsong;ZHONG Zhenlin(The 34th Research Institute of CETC,Guilin Guangxi 541004,China;Military Representative Office of Rocket Army Equipment Department in Shenzhen area,Shenzhen Guangdong 518000,China)

机构地区：[1]中国电子科技集团公司第三十四研究所,广西桂林541004 [2]火箭军装备部驻深圳地区军事代表室,广东深圳518000

出　　处：《光通信技术》2019年第9期58-62,共5页Optical Communication Technology

摘　　要：针对天基授时系统的可靠备份需求,分析国内外光网络授时技术现状及发展趋势,提出一种广域覆盖的地面高精度授时体系建设方案,其体系架构包含传输层、授时承载层、应用层和运维管理层等。该方案以精确时间协议/White Rabbit PTP(PTP/WR-PTP)等标准通用授时协议为基础,适配多种信道后承载于不同体制光网络中,并辅以多种手段提升授时组网性能,以满足各领域时间同步应用需求。另外,详细说明了光网络授时体系所涉及的关键技术及组网实现方案,并按分阶段演进的策略规划了未来的发展路线。Aiming at the reliable backup requirement of space-based time service system,this paper analyses the current situation and development trend of optical network time service technology at home and abroad,and puts forward a construction scheme of wide-area coverage ground high-precision time service system.Its architecture includes transmission layer,time service bearing layer,application layer,operation and maintenance management layer,etc.This scheme is based on the precise time protocol/White Rabbit PTP(PTP/WR-PTP) and other standard universal time service protocols.It adapts multiple channels and carries them in different optical networks.It also improves the performance of time service network by various means to meet the requirements of time synchronization applications in various fields.In addition,the key technologies and networking achievement schemes of time service in optical fiber networks are introduced in detail,and the future development route is planned according to the strategy of staged evolution.

关 键 词：授时 光网络 时间同步 

分 类 号：TN929.11[电子电信—通信与信息系统]