BPM短波授时发播系统及其通道时延分析与测量  

An analysis and measurement on the time delay of BPM short wave broadcasting system and its channel

作　　者：谢亮[1] 芦旭[1] 蒙智谋 段建文[1] XIE liang;LU xu;MENG Zhi-mou;DUAN Jian-wen(National Time Service Center, Chinese Academy of Sciences, Xi’an 710600)

机构地区：[1]中国科学院国家授时中心

出　　处：《时间频率学报》2019年第3期248-255,共8页Journal of Time and Frequency

基　　金：中国科学院国家授时中心青年创新人才资助项目(Y824SC1S11)

摘　　要：BPM短波授时系统七部短波发射机及监测控制设备的更新改造于2018年全部完成,由于设备更换,原BPM短波授时发播系统的时延修正值已无法适用于当前系统。重新测量系统各模块的时延,分析时延产生的原因,对于提高短波授时发播时刻精度至关重要。主要对短波授时发播设备、控制设备等关键设备的时延值进行了测量,分析了时延产生的主要因素,为短波授时发播时刻的时延修正提供参考。The National Time Service Center update seven shortwave BPM transmitters and the control systems of these transmitters in 2018. Due to the change of the hardware, the time delay correction values of the old BPM system cannot be used. Therefore, it is necessary to measure the time delay of the new system. Here, we report the measurement of time delays of the new equipments, i.e., the new transmitters and the new control system, and analyze the main reasons of equipment time delays.

关 键 词：短波授时 发射机 时延 

分 类 号：P127.1[天文地球—天体测量]