›› 2019, Vol. 39 ›› Issue (4): 68-.doi: 10.16708/j.cnki.1000-758X.2019.0031

• 技术交流 • 上一篇    下一篇

修正的阿伦方差对调相闪烁噪声的抑制

 刘英乾, 陈强, 薛仁魁, 兰雪梅, 张真智   

  1. 北京东方计量测试研究所,北京100086
  • 收稿日期:2018-11-23 修回日期:2018-12-24 出版日期:2019-08-25 发布日期:2019-04-22
  • 作者简介:刘英乾(1987-),男,工程师,研究方向为卫星应用产品检测

Study on the inhibition effect of modified Allan variance on Flicker PM noise

 LIU  Ying-Qian, CHEN  Qiang, XUE  Ren-Kui, LAN  Xue-Mei, ZHANG  Zhen-Zhi   

  1. Beijing Orient Institute of Measurement and Test, Beijing 100086, China
  • Received:2018-11-23 Revised:2018-12-24 Online:2019-08-25 Published:2019-04-22

摘要: 在时频领域内,普遍采用阿伦方差来表征频率稳定度,但阿伦方差对于调相闪烁噪声的抑制能力有其本身算法的缺陷。提出了用修正阿伦方差来表征频率稳定度,以降低噪声对频率稳定度的影响。分析并研究了修正的阿伦方差对调相闪烁噪声的抑制机理。通过卫星共视时间比对试验,对氢原子钟与原子时标国家计量基准的比对数据进行评估,利用噪声模型对评估结果进行论证。验证了修正阿伦方差对于调相闪烁噪声抑制的有效性。

关键词: 频率稳定度, 阿伦方差, 修正的阿伦方差, 调相闪烁噪声, 共视时间比对, 时频;原子钟

Abstract: In the time and frequency field, Allan variance is utilized in general to indicate frequency stability. Allan variance can not inhibit Flicker PM effectively because it′s defective algorithm. In order to reduce the impact of noise on frequency stability, frequency stability should be indicated by modified Allan variance. Modified Allan variance for inhibition mechanism of Flicker PM is analyzed. Through the satellite commonview method, the comparative data of hydrogen clock and UTC(NIM) are evaluated. Then, the noise model is used to demonstrate the results of evaluation. The effectiveness of the modified Allen variance against Flicker PM inhibition is verified.

Key words: frequency stability, Allan variance, modified Allen variance, Flicker PM, commonview time comparison, time and frequency, hydrogen clock