与时俱进的时间工作

The Progress on Time & Frequency During the Past 5 Decades

20世纪 50年代以来计算机技术、信息科学和空间科学的发展对高精度时间频率提出了日益增长的需求 ,电子技术、空间技术和量子物理的发展推动了高精度时间频率领域的学科发展和技术进步。简要介绍时间尺度、UT1的测定技术、守时钟、时间同步技术和授时手段各方面半个世纪的飞速发展 ,并展望未来时间工作的前景。

The number and variety of applications using precise timing are astounding and increasing along with the new technology in communication, computer science, space science as well as in other fields. The world has evolved into the information age, and precise timing is at the heart of managing the flow of that information, which prompts the progress on precise timing itself rapidly. The development of time scales, UT1 determination, frequency standards, time transfer and the time dissemination for the past half century in the world and in China are described in this paper. The expectation in this field is discussed.