摘要
铯原子频率标准具有长期稳定性好、可靠性高的优点,在导航定位、守时授时、通信电力、时频计量等领域有着广泛的应用。近年来由于军事领域对高精度时间频率源的需求,铯原子频标的使用环境从实验室走向了战车、舰船等机动平台。本文针对铯原子频标在战车、舰船、高原等复杂环境下的环境适应性,研究环境因素对整机指标的影响机理。通过仿真与试验对整钟设计进行优化,以提高整机在力学、热、磁场、低气压等复杂环境下的适应性。经过优化设计后的国产铯束频率标准样机通过了相关环境试验项目的考核,各项指标均满足要求。研究结果表明,铯原子钟电性能样机的稳定度优于8.73×10^(-15)/5 d,磁敏感度3.15×10^(-14)/Gauss,工作温度特性-8.18×10^(-14),这项工作为国产化铯钟的进一步应用提供了基础。
Based on long-term instability and high reliability,cesium frequency standard is widely used to create high-precision and high-stability time-frequency system,which has a wide range of applications,such as navigation,positioning,broadcasting,communication,electricity and time-frequency metrology area.In recent years,due to the demand for high-precision time and frequency system in the military field,the atomic clock has been transferred from laboratory to the mobile platform such as chariots and ships.In this paper,the environmental adaptability of cesium atomic frequency standard in complex environment such as chariot,ship and plateau is studied,and the influence mechanism of environmental factors on the whole machine index is studied.Through simulation and test,the design of the clock is optimized to improve the adaptability of the machine in complex environments such as mechanics,heat,magnetic field and low pressure.After optimization design,the home-made cesium atomic frequency standard prototype has passed the assessment of relevant environmental test items,and all the indicators meet the requirements.The frequency instability of the electrical prototype is better than 8.73×10^(-15)/5 d,the magnetic sensitivity is 3.15×10^(-14)/Gauss,and the temperature coefficient is-8.18×10^(-14).This work will hopefully contribute to the foundation of further applications.
作者
郑宁
张亮
郝莉娜
王骥
杨军
刘志栋
陈江
高望远
ZHENG Ning;ZHANG Liang;HAO Li-na;WANG Ji;YANG Jun;LIU Zhi-dong;CHEN Jiang;GAO Wang-yuan(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China;Equipment support team of Equipment Department Aerospace Systems Division Strategic Support Force,Beijing 100000,China)
出处
《时间频率学报》
CSCD
2024年第1期1-7,共7页
Journal of Time and Frequency
基金
国家自然科学基金“叶企孙”科学基金重点项目(U2341247)
五院杰出青年人才基金(2022-YH2611)。
关键词
国产铯束频率标准
环境适应性
振动
低气压
稳定度
home-made atomic chock frequency standard
environment adaptability
vibration
low pressure
stability
