水下信息传输网时间同步研究  

Research on Time Synchronization of Underwater Information Transmission Network

作　　者：李东海 杨帆 LI Dong-hai;YANG Fan(Unit 91404 of PLA,Qinhuangdao Hebei 066001,China)

机构地区：[1]解放军91404部队

出　　处：《通信技术》2018年第4期875-880,共6页Communications Technology

摘　　要：阐述水下信息传输网中实现时间同步的重要性,先后从时钟源的选取、水下信息传输网中OTN时间同步方式的选取两个方面进行了比较分析;简单介绍了NTP和PTP技术的原理,针对水下信息传输网的网络结构和特点,提出了详细的水下信息传输网的时间同步方案。方案选取北斗卫星为时钟源,OCXO为备用时钟,采用NTP协议和IEEE1588协议在网络中传递时间信号,实现了远距离、多精度的时间同步。The importance of achieving time synchronization in an underwater information transmission network is described.A comparative analysis is made from the selection of clock source and the selection of OTN time synchronization method in underwater information transmission network.The principle of NTP and PTP technology is briefly introduced.Aiming at the network structure and characteristics of underwater information transmission network,a detailed time synchronization scheme for underwater information transmission network is proposed.The scheme selects Beidou satellite as the clock source,uses OCXO as backup clock,adopts NTP protocol and IEEE1588 protocol to transmit time signals in the network,and realizes long-distance and multi-precision time synchronization.

关 键 词：水下信息传输网 NTP PTP 时间同步 

分 类 号：TN915.85[电子电信—通信与信息系统]