高精度时频信号的远距离传输技术  

High-Precision Time and Frequency Transfer Technique Between Remote Stations

作　　者：周兵 龚航[2] 

机构地区：[1]北京卫星导航中心,北京100094 [2]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《全球定位系统》2014年第6期38-41,共4页Gnss World of China

摘　　要：本文讨论了采用光纤双向时间传输方法实现高精度时间和频率信号远距离传输的技术,分析了该技术的实现原理并进行了验证实验,结果表明:时间信号经过1km的光纤传输距离,其时间传递精度优于0.2ns,频率信号稳定度传输插损小于0.4,相位噪声传输插损小于2dB.该技术可为卫星导航系统主控站设备的远距离布设提供有效的技术支持。this paper, high-precision time and frequency transfer between remote stations using optical fiber by two-way method is discussed. The principle of this method is analyzed and verified by experiment. The result shows that the accuracy of time transfer is better than 0.2 ns after long distance transmission of lkm in fiber, and the transfer insertion loss of fre- quency stability and phase noise is less than 0.1 and 2 dB respectively. The method of this paper provides effective technical support for remote layout of master station equipment in satellite navigation system.

关 键 词：时间频率 光纤传递 双向时间比对 远距离传输 

分 类 号：TN967.1[电子电信—信号与信息处理]