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Time and frequency applications

机译:时间和频率应用

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摘要

An overview is given of the capabilities of atomic clocks and quartz crystal oscillators in terms of available precision of time and frequency signals. The generation, comparison, and dissemination of time and frequency is then discussed. The principal focus is to survey uses of time and frequency in navigation, communication, and science. The examples given include the Global Positioning System, a satellite-based global navigation system, and general and dedicated communication networks, as well as experiments in general relativity and radioastronomy. The number of atomic clocks and crystal oscillators that are in actual use worldwide is estimated.
机译:就时间和频率信号的可用精度而言,概述了原子钟和石英晶体振荡器的功能。然后讨论时间和频率的生成,比较和分发。主要重点是调查导航,通信和科学中时间和频率的使用。给出的例子包括全球定位系统,基于卫星的全球导航系统,通用和专用通信网络,以及广义相对论和射电天文学的实验。估算了全世界实际使用的原子钟和晶体振荡器的数量。

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