激光与光电子学进展, 2018, 55 (8): 081201, 网络出版: 2018-08-13
光纤时间传递的时延测量技术 下载: 542次
Time-Delay Measurement Techniques for Time Transfer over Optical Fibers
测量 光纤链路 光纤时间传递 时延测量 measurement fiber-optic link time transfer over optical fibers time-delay measurement
摘要
为了满足长距离光纤时间传递的工程要求,提出了一种基于时间数字转换(TDC)和现场可编程门阵列(FPGA)的时延测量方法。该方法将FPGA测量范围大和TDC分辨率高的特点相结合,实现了大范围高分辨率的光纤时延测量。研究结果表明,该系统的测量范围为0~1 s,分辨率为22 ps,不确定度优于100 ps。
Abstract
In order to meet the engineering requirements of long haul time transfer over optical fibers, a time-delay measurement method based on the time digital conversion (TDC) and the field programmable gate array (FPGA) is proposed. This method combines the characteristics of a large measurement range for FPGA and a high resolution for TDC, and thus an optical fiber time-delay measurement with a high resolution in a wide range is realized. The research results show that the measurement range of this system is 0-1 s, the resolution is 22 ps, and the uncertainty degree is superior to 100 ps.
周旭, 陈法喜, 赵侃, 刘涛, 张首刚. 光纤时间传递的时延测量技术[J]. 激光与光电子学进展, 2018, 55(8): 081201. Zhou Xu, Chen Faxi, Zhao Kan, Liu Tao, Zhang Shougang. Time-Delay Measurement Techniques for Time Transfer over Optical Fibers[J]. Laser & Optoelectronics Progress, 2018, 55(8): 081201.