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地震、气象、国防、勘探、计量等许多方面的科研和生产部门需要高精度的时间数据,这些单位大都配备包括频率稳定度较高的晶体数字钟在内的时间服务系统,时间服务系统要定期地同授时台发播的世界时、协调时或者广播电台的整点六响信号校对,以保证数字钟的时间误差始终限制在数毫秒或者数十毫秒的范围内.因此,如何使对钟实现既精确可靠又无人值守的完全自动化已成为比较突出的课题.
Scientific research and production departments in many fields such as earthquakes, meteorology, national defense, exploration and measurement require highly accurate time data. Most of these units are equipped with time service systems, including crystal digital clocks with high frequency stability. Periodic service systems are regularly scheduled When the world is being broadcast to Taiwan, the hour-long signal from the radio station should be collated to ensure that the time error of the digital clock is always limited to a few milliseconds or a few tens of milliseconds. Therefore, Complete automation that is both accurate and unattended has become a prominent issue.