SOHM型氢钟在国家授时中心的运行情况分析  

Operation Status and Data Analysis for SOHM Hydrogen Masers Running at NTSC

作　　者：刘春侠[1] 王正明[1] 

机构地区：[1]中国科学院国家授时中心,陕西西安710600

出　　处：《时间频率学报》2006年第2期142-150,共9页Journal of Time and Frequency

基　　金：国家自然科学基金资助课题(60272067);中国科学院知识创新工程重要方向项目"我国综合原子时建立与保持的研究"资助课题:(KJCX2-SW-T07)

摘　　要：上海天文台研制的型号为SOHM-3和SOHM-4的3台氢原子钟在中国科学院国家授时中心(NTSC)已经运行了一年多时间。收集了每个氢原子钟与NTSC主钟的时间比对数据。数据的分析结果给出了这几台氢钟在不同采样间隔上的频率稳定度,也显示出1台氢钟明显的相位跳变,讨论了这种相位跳变的原因。比较了这3台氢钟和从美国进口的Symmetricom公司制造的氢钟的频率稳定度的温度变化效应,指出了上海天文台研究制的氢钟存在的主要问题。Three hydrogen masers with the types of SOHM-3 and SOHM-4 built by Shanghai Astronomical Observatory have run at the National Time Service Center （NTSC）, the Chinese Academy of Sciences for longer than 12 months. The data of time comparison between each of the hydrogen masers and the master clock of NTSC are collected. The analysis on the data shows the frequency stabilities at different sample times as well as the evident phase jump of one of the masers. The defect causing the jump is discussed. The temperature effects on the frequency stabilities for different masers, as compared with the masers built by Symmetricom Company, illustrate the problem existing with SHOM masers.

关 键 词：氢原子钟 稳定度 温度效应 

分 类 号：TM935.11[电气工程—电力电子与电力传动]