| WR 技术的发展与应用 |
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| 引用本文： | 彭程锦,杨军,张明,李世光.WR 技术的发展与应用[J].宇航计测技术,2019,38(5):7-15. |
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| 作者姓名： | 彭程锦 杨军 张明 李世光 |
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| 作者单位： | 1、北京无线电计量测试研究所，北京100039；;
2、中国航天科工集团第二研究院研究生院，北京100039；;
3、计量与校准技术重点实验室，北京100039） |
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| 摘 要： | 本文介绍一种在精密时钟同步协议（PTP）的基础上发展而来的新技术——WR 技术（White Rabbit，白兔）。WR 联合同步以太网以及双混频时差法测量手段，通过对主从时钟间链路环路延迟的不间断高精度的测量，后以测量结果对从时钟的时钟信息进行动态校准，主从时钟的同步精度达到亚纳秒甚至皮秒级。文章先引出WR的发展历史，以及WR 中所包含的主要技术，并介绍目前WR 在某些科学领域所发挥的作用，最后提出WR 未来在其他领域的应用。
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| 关 键 词： | White Rabbit 协议 同步以太网 精确时间同步协议 |
Development and Application of WR |
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| PENG Cheng-jin,YANG Jun,ZHANG Ming,LI Shi-guang.Development and Application of WR[J].Journal of Astronautic Metrology and Measurement,2019,38(5):7-15. |
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| Authors: | PENG Cheng-jin YANG Jun ZHANG Ming LI Shi-guang |
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| Institution: | 1.、Beijing Institute of Radio Metrology and Measurement, Beijing 100039, China;
2、Graduate School of the Second Research Institute of CASIC, Beijing 100039, China;
3、Science and Technology on Metrology and Calibration Laboratory, Beijing 100039, China |
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| Abstract: | This paper introduces a new technology - WR technology (White Rabbit) which is developed on the basis of Precision Clock Synchronization Protocol (PTP). Combined with synchronoμs Ethernet and double mixing time difference method, the slave clock is dynamically calibrated by continuoμs high-precision measurement of link loop delay between this two clocks to achieve sub-nanosecond or picosecond precision synchronization of master clock and slave clock. This article first introduces the history of WR development and the main technologies contained in WR, then tells the role WR plays in some scientific fields. Finally, it proposes the future application of WR in other fields. |
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| Keywords: | White Rabbit protocol Synchronous Ethernet (SyneE) Precise Time synchronization Protocol (PTP) |
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