White Rabbit: Sub-nanosecond timing over Ethernet
White Rabbit: Sub-nanosecond timing over Ethernet
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DOI：
10.1016/j.nima.2012.12.096
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发表时间：
2013-10
影响因子：
1.4
通讯作者：
P. Jansweijer;H. Peek;E. Wolf
中科院分区：
文献类型：
--
作者：
P. Jansweijer;H. Peek;E. Wolf
白色兔子（WR）项目是一个多实验室、多公司的努力，旨在以完全开放的设计将最好的数据传输和计时世界结合在一起。WR是一个完全确定性的基于以太网的网络，用于通用数据传输和同步。其目的是使大量节点的同步与亚纳秒精度和皮秒抖动在长光纤长度。所使用的关键技术是物理层同步（时钟恢复）和精确时间协议（IEEE 1588）。WR通过连续跟踪和补偿传输延迟，在所有节点中产生亚纳秒同步精度定时。我们给出了WR项目的概述，并描述了该项目的设计目标和规格。WR交换机和（用户）节点，这是WR系统的核心组成部分和真实的定时测量的WR硬件原型。
The White Rabbit (WR) project is a multi-laboratory, multi-company effort to bring the best of the data transfer and the timing world together in a completely open design. WR is a fully deterministic Ethernet-based network for general purpose data transfer and synchronization. The aim is to enable the synchronization of a large number of nodes with sub-nanosecond accuracy and picosecond jitter over long lengths of fibre. The key technologies used are physical layer syntonization (clock recovery) and the Precision Time Protocol (IEEE 1588). WR generates sub-nanosecond synchronous precision timing in all nodes by continuous tracking and compensating the transmission delays. We give an overview of the WR project and describe the design goals and specifications of the project. The WR switch and the (user) node which are the central components of the WR system and real timing measurements of prototypes of WR hardware are presented.