iGMAS国家授时中心跟踪站新接收机钟差分析与相对时延校准  

An analysis of receiver clock and delay calibration for iGMAS station at national time service center

作　　者：李雪宁 孙保琪 杨海彦[1,2,3] 苏行 杨旭海[1,2,3] LI Xuening;SUN Baoqi;YANG Haiyan;SU Hang;YANG Xuhai(University of Chinese Academy of Sciences,Beijing 100049,China;National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;Key Laboratory of Precise Positioning and Timing Technology,Chinese Academy of Sciences,Xi’an 710600,China)

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院国家授时中心,陕西西安710600 [3]中国科学院精密导航定位与定时技术重点实验室,陕西西安710600

出　　处：《电子设计工程》2022年第6期136-140,146,共6页Electronic Design Engineering

基　　金：国家自然科学基金面上项目(12073034)。

摘　　要：2019年12月XIA1站对接收机及天线进行了升级更换,为了分析XIA1新接收机的时间服务性能,实现精密授时,采用共钟精密单点定位时间传递的方式分析XIA1新接收机2019年12月-2020年8月共9个月的钟差和链路时延。结果表明,XIA1接收机钟差的控制阈值较大,超过16 ms;XIA1与NTP1之间链路时延为9个月,STD小于0.5 ns,稳定性较好;基于BIPM提供的NTP1 TAIPPP数据对XIA1跟踪站进行了接收机相对时延校准。分析结果显示,XIA1测站可以为后续开展时间服务工作提供重要支持。In December 2019,the receiver and antenna of XIA1 station were upgraded and replaced. In order to analyze the time service performance of the new XIA1 receiver and realize the purpose of precision time service. The clock offset and link delay of the new XIA1 receiver from December 2019 to August 2020 are analyzed by means of common clock precise point positioning time transfer. The results show that the clock offset control threshold of XIA1 receiver is larger than 16 ms;The STD of the link delay between XAI1 and NTP1 during 9 months is less than 0.5 ns,which indicates a good stability,based on the NTP1 TAIPPP data provided by BIPM,the relative time delay of the receiver of XIA1tracking station is calibrated. The analysis results show that the XIA1 station could provide important support for the future time service.

关 键 词：时间传递 精密单点定位 接收机时延 相对校准 

分 类 号：TN98[电子电信—信息与通信工程]