Distributing time by fibre
Distributing time by fibre
复制标题
按光纤分配时间
DOI：
--
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
P. Whibberley
中科院分区：
文献类型：
--
作者：
E. L. English;Ali Ashkhasi;P. Whibberley
精确的时间支撑着现代社会的关键基础设施，包括电信、计算机网络、电网和广播。目前，全球导航卫星系统(GNSS)提供这些应用所使用的授时信号；然而，通过光纤链路传输的时间信号可以提供更高的性能。可通过光纤实现的高精度时间传输对于粒子加速器和射电望远镜阵列等高端科学研究项目中的时钟同步非常重要。此外，直接从授时机构通过光纤分配时间可以提供对国际时标协调世界时(UTC)的弹性、准确性和可追溯性。这些都是工商业中计时的关键要求，在金融交易的时间戳等应用中，光纤分配提供了一种安全的替代GNSS时间的方法。这篇文章将介绍通过光纤分配时间的技术，这些技术在工业、科学和计量学中得到了商业上的广泛应用。
Precise time underpins critical infrastructure in modern society, including telecommunications, computer networks, electrical power grids and broadcasting. At present, Global Navigation Satellite Systems (GNSS) provide the timing signals that are used by these applications; however, time signals delivered over fibre links can offer higher performance. The high accuracy time transfer achievable by fibre is important for synchronising clocks in high-end scientific research projects such as particle accelerators and radio telescope arrays. In addition, distributing time over an optical fibre directly from a timing institute can provide resiliency, accuracy and traceability to the international time scale Coordinated Universal Time (UTC). These are key requirements for timing in industry and commerce, and in applications such as the timestamping of financial trades, fibre distribution offers a secure alternative to time from GNSS. This article will present techniques for distributing time by fibre that are commercially available and widely used for applications in industry, science and metrology.
影响因子：
64.8
作者：
Beloy, Kyle;Bodine, Martha I.;Zhang, Xiaogang
通讯作者：
Zhang, Xiaogang