| 频率稳定度测量方法的对比分析 |
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| 引用本文： | 焦月,张升康.频率稳定度测量方法的对比分析[J].宇航计测技术,2013,33(1):35-38,57. |
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| 作者姓名： | 焦月 张升康 |
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| 作者单位： | 1、北京无线电计量测试研究所，北京 100039;
2、计量校准技术国防科技重点实验室，北京 100039 |
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| 摘 要： | 作为衡量频率标准工作性能的重要指标，频率稳定度对评估产品的稳定性和可靠性起到重要作用。利用传统的阿仑方差测量频标的长期稳定度时，通常需要很长的时间，测量周期较长。本文首先研究了阿仑总方差、Thêo1和ThêoH几种相比阿仑方差可缩短测量周期的频率稳定度时域分析方法，然后基于一组实测的铷钟时间偏差数据，对这几种方差进行了对比和分析。
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| 关 键 词： | 时间频率 时域稳定度 Allan方差 总方差 ThêoH |
Comparison and Analysis of the Methods to Measure the Frequency Stability |
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| JIAO Yue,ZHANG Sheng-kang.Comparison and Analysis of the Methods to Measure the Frequency Stability[J].Journal of Astronautic Metrology and Measurement,2013,33(1):35-38,57. |
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| Authors: | JIAO Yue ZHANG Sheng-kang |
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| Institution: | 1、Beijing Institute of Radio Metrology and Measurement, Beijing 100039;
2、The Key Laboratory of Metrology and Calibration Technology, Beijing 100039 |
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| Abstract: | As a main aspect to measure the performance of the frequency standards, the frequency stability plays an important role in evaluating the stability and reliability of the products. It usually takes a long time to compute the traditional Allan variance for measuring the long-term stability of the frequency standards. In this paper, Total variance, Thêo1 and ThêoH are studied, which can reduce the measuring time in time domain stability analysis comparing with the traditional Allan variance; then, based on the time error data of a Rubidium (Rb) clock measured in the laboratory, these variances are compared and analyzed. |
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| Keywords: | Time and frequency Time domain stability Allan variance Total variance ThêoH |
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