| 基于光纤双环网的高精度时频同步技术研究 |
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| 引用本文： | 田秀伟,楼红英,霍晔,杨保国,段飞,吴爱华.基于光纤双环网的高精度时频同步技术研究[J].宇航计测技术,2019,38(5):33-37. |
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| 作者姓名： | 田秀伟 楼红英 霍晔 杨保国 段飞 吴爱华 |
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| 作者单位： | 1、北京无线电计量测试研究所，北京 100039 |
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| 基金项目： | 国家重点研发计划（2016YFF01022105）。 |
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| 摘 要： | 本文介绍了一种基于光纤双环网的时频同步技术设计方法，针对时频设备协同使用时如何获得高精度同步指标这一问题提出了一种设计思路。以系统时间源使用北斗/GPS/GLONASS，本系统同步精度优于5E-13，频率稳定度优于5E-13@1d；以UTC(BIRMM)输出的TOD+1PPS做系统时间源，本系统同步精度优于4E-13，频率稳定度优于6E-14@1d。本方案提出的方法原理简单，系统可根据使用情况进行裁剪，相比卫星双向等手段成本低廉，适合在时频同步领域推广。
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| 关 键 词： | 时间频率同步 光纤双环网 高精度 频率稳定度 |
Evaluation of Measurement Uncertainty of Noise Parameters Standards |
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| TIAN Xiu-wei,LOU Hong-ying,HUO Ye,YANG Bao-guo,DUAN Fei,WU Ai-hua.Evaluation of Measurement Uncertainty of Noise Parameters Standards[J].Journal of Astronautic Metrology and Measurement,2019,38(5):33-37. |
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| Authors: | TIAN Xiu-wei LOU Hong-ying HUO Ye YANG Bao-guo DUAN Fei WU Ai-hua |
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| Institution: | 1、Beijing Institute of Metrology and Measurement,Beijing 100039,China |
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| Abstract: | The lack of uncertainty of noise parameters standards often impedes the calibration of noise parameters systems. In this paper, a measurement model for noise parameters standards was derived and the evaluating of measurement uncertainty of noise parameters standards using Monte Carlo method was proposed. Based on MATLAB Integrated Development Environment, we developed a dedicated software for evaluating noise parameters standards’ measurement uncertainty , and this software can customized noise parameters uncertainty in both sweep and point frequency modes. Furthermore, the calculation results include not only the best estimate of noise parameters and its uncertainty, but also the probability density distribution of standard Value of noise parameters. By comparison, the result was proved correct and reasonable. |
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| Keywords: | Noise parameters Monte Carlo method Uncertainty evaluating |
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