基于GPS/北斗系统的时间源研究与设计  

Research and design of time source based on GPS/BD system

作　　者：黄飞[1] 王刚[1] 明德祥[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《系统工程与电子技术》2009年第3期726-729,共4页Systems Engineering and Electronics

基　　金：国防科工委"十一五"民用航天预先研究项目资助课题(C1320063101)

摘　　要：为了提高分布式测试系统中各设备单元的时间同步精度,需要研制安全可靠的时间源。首先分析了时间源的结构组成与系统模型,提出了采用多时间基准冗余配置的方法,提高了时间源的可靠性。在此基础上给出了基于GPS/北斗系统的双模时间源设计方案,并对系统性能进行了验证。实验结果表明时间源的性能达到了ITU-T G811规范的要求。目前,该系统成功应用于CDMA基站的定时系统。To achieve high time synchronization accuracy among various testing equipments of distributed measurement and control systems, a safe and reliable time source is required. The architecture and model of the time source is analyzed firstly, and a configurable method of redundancy time benchmark is presented, which can enhance the reliability of the time source. On the basis of the method, a double mode time source based on GPS and BD system is designed. The experimental result shows that the proposed time source satisfies the ITU- T GSll criterion. The time source has been used in CDMA systems as a time benchmark now.

关 键 词：分布式测试系统 时间统一 时间源 可靠性 GPS系统 北斗系统 

分 类 号：TP21[自动化与计算机技术—检测技术与自动化装置]