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修订日期：2006-05-15
修订日期：2006-05-15
中文摘要: 时间统一是跨区域多个气象卫星地面站顺利完成卫星数据接收任务及全系统业务正常运行和控制的重要要素。时间的标准有世界时、原子时及世界协调时等,提供时间标准的源有专用时统设备、全球定位系统(GPS)授时设备、天文台短波广播接收设备等。系统内的时间差异将使系统不能协调工作,导致接收任务的部分失败或完全失败。首先介绍了时间标准,和时间在业务系统中传输的常用方法,然后介绍一种利用GPS授时设备提供时码源,实现全系统时间统一的解决方案,最后讨论了采用该方法给系统授时的时间误差分析方法。该方案在气象卫星地面应用系统中成功应用,并可靠工作。此方案在多雷达组成的探测网,自动气象站网及其他气象业务网络中也将有广泛的应用前景。
中文关键词: 时间标准，时码源，GPS授时，解决方案，误差分析
Abstract:Time synchronization is an important factor for operational running of meteorological satellite ground stations. time standards consist of Universal Time (UT), Atomic Time (AT) and Universal Time Coordinated (UTC). Time services could be done by short-wave radio, GPS satellite and other special instruments. Time error could lead the system running in a disharmony way, and might make the task failure partially or completely. Firstly, time transmission way and time standards used in the operational system is introduced. Secondly, time service by GPS satellite, which can be adopted to achieve the time synchronization, is also introduced. Finally, the error of the above discussed time service is analyzed. The project has been applied to operational ground system of meteorological satellite successfully and will benefit to other applications, such as radar network systems, automatic meteorological network stations and so on.
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引用文本：
朱爱军,赵立成,何成,2006.异地气象卫星地面站的时间同步方案及误差分析[J].气象,32(8):47-53.
,2006.Solution and Error Analysis for Time Synchronization among Meteorological Satellite Ground Stations at Different Regions[J].Meteor Mon,32(8):47-53.
朱爱军,赵立成,何成,2006.异地气象卫星地面站的时间同步方案及误差分析[J].气象,32(8):47-53.
,2006.Solution and Error Analysis for Time Synchronization among Meteorological Satellite Ground Stations at Different Regions[J].Meteor Mon,32(8):47-53.