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Phase Noise Impact on the Short-Term Frequency Stability of a Frequency Source
IETE Journal of Research ( IF 1.5 ) Pub Date : 2020-12-21 , DOI: 10.1080/03772063.2020.1859953
Md. Tosicul Wara 1 , M. S. Bhuvaneshwari 1 , M. R. Raghavendra 1 , Usha Bhandiwad 1
Affiliation  

The impact of phase noise on the short-term frequency stability (i.e. the Allan deviation with smaller averaging time) of a frequency source has been discussed in detail in the paper. The paper also describes a technique to estimate the Allan deviation values of a frequency source from its measured phase noise plot. Using the technique described here, the Allan deviations of a 10 MHz Rubidium Atomic Frequency Source (RAFS) of an IRNSS (Indian Regional Navigation Satellite System) satellite have been estimated. The estimated Allan deviation values thus obtained from the measured phase noise plot of the RAFS are then compared with the measured Allan deviation values obtained by standard methods (such as the Standard Reference Source method and the 3-Corner Hat method) during Integrated Spacecraft Testing of the IRNSS satellites.



中文翻译:

相位噪声对频率源短期频率稳定性的影响

相位噪声对短期频率稳定性的影响(文中详细讨论了频率源的艾伦偏差和较小的平均时间)。该白皮书还介绍了一种根据测得的相位噪声图估算频率源艾伦偏差值的技术。使用此处描述的技术,已经估计了 IRNSS(印度区域导航卫星系统)卫星的 10 MHz 铷原子频率源 (RAFS) 的艾伦偏差。然后将从 RAFS 的测量相位噪声图获得的估计艾伦偏差值与在综合航天器测试期间通过标准方法(例如标准参考源方法和 3 角帽方法)获得的测量艾伦偏差值进行比较IRNSS 卫星。

更新日期:2020-12-21
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