基于光频标的氢原子钟频率驾驭系统软件设计  

Software Design of Hydrogen Atomic Clock Frequency Steering System Based on Optical Frequency Standards

作　　者：徐金锋 史丰丰 李国俊 林勇昕 XU Jin-feng;SHI Feng-feng;LI Guo-jun;LIN Yong-xin(Beijing Satellite Navigation Center,Beijing 100094,China)

机构地区：[1]北京卫星导航中心,北京100094

出　　处：《宇航计测技术》2023年第5期63-67,共5页Journal of Astronautic Metrology and Measurement

摘　　要：光频标和氢原子钟联合守时的时间系统需要集成仪器控制、数据采集、原子钟性能评估等功能,解决光频标的有效运行率低对氢原子钟频率驾驭的影响,因此,设计了基于光频标的氢原子钟频率驾驭系统软件。软件使用可互换虚拟仪器驱动和网络通信实现设备间的数据交互,采用中位差(Median Absolute Deviation,MAD)方法的数据预处理策略完成测量数据的异常点检测,并利用Alglib数值分析和数据挖掘函数库完成核心程序编写。实验表明,在光频标的有效运行率为80%的条件下,氢原子钟驾驭后产生的时间信号与UTC的同步精度小于2.5 ns。The time system of combining optical frequency standards and hydrogen atomic clocks requires integration of instrument control,data acquisition,atomic clock performance evaluation,and other functions to address the impact of low effective operation rate of optical frequency standards on the frequency steering of hydrogen atomic clocks.Therefore,a hydrogen atomic clock frequency steering system software has been designed.The software uses interchangeable virtual instrument drivers and network communication to achieve data interaction between devices.The data preprocessing strategy using the Median Absolute Deviation(MAD)method is used to detect outliers in measurement data,and the core program is written using the Alglib numerical analysis and data mining function library.Experiments have shown that the synchronization accuracy between the time signal generated by the hydrogen atomic clock and UTC is less than 2.5 ns under the condition of an effective operating rate of 80% for the optical frequency standard.

关 键 词：氢原子钟 频率驾驭 自动控制 中位差 

分 类 号：TJ06[兵器科学与技术—兵器发射理论与技术]