GNSS CV精密时间服务系统的可靠性改进  

Improvement of reliability for the precise time service system based on GNSS CV

作　　者：林思佳[1,2,3] 王玉林[1] 王平利[1,3] 卢建福[1,2,3] 刘彪[1,2,3] 

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院时间频率基准重点实验室,西安710600 [3]中国科学院研究生院,北京100039

出　　处：《时间频率学报》2013年第2期84-91,共8页Journal of Time and Frequency

基　　金：国家自然科学基金资助项目(10573019)

摘　　要：为了提高中国科学院国家授时中心基于GNSS CV精密时间服务系统的可靠性,提出并采用了主备服务器双机热备的技术方案。阐述了服务器主从模式双机热备的工作模式,包括主、备服务器间的数据备份、服务器运行状态的检测和切换。根据系统中数据类型和备份要求的不同,采用了相应的备份策略和备份程序实现主备服务器间数据备份;设计了主备服务器的运行状态检测和切换控制流程。测试表明,采用服务器双机热备技术显著提高了GNSS CV精密时间服务系统的可靠性。A design of double hot standby project for server system is proposed for improving the reliability of the precise time service system of NTSC based on GNSS CV. The primary-standby working mode of double hot standby servers, including the data backup and the monitoring and switching of running state of servers, is described. According to different types of data and different backup requirements, different backup policies and backup processes are adopted to realize the data backup between the primary server and the standby. The control procedures of monitoring and switching of running state for primary and standby servers are designed. The tests show that the reliability of the system is enhanced obviously.

关 键 词：GNSS CV 精密时间 双机热备技术 数据备份 

分 类 号：P127.1[天文地球—天体测量]