Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter
文献类型：期刊论文
| 作者 | Liu, Kun2,3; Guan, Xiaolong3; Ren, Xiaoqian3; Wu, Jianfeng1,2,3
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| 刊名 | SENSORS
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 24期号:14页码:17 |
| 关键词 | adaptive Kalman filter rubidium atomic clock autocovariance least squares time and frequency Allan deviation |
| DOI | 10.3390/s24144495 |
| 英文摘要 | Rubidium atomic clocks have been used extensively in various fields, with applications such as a core component of Global Navigation Satellite Systems (GNSS). However, they exhibit inherently poor long-term stability. This paper presents the development of a control system for rubidium atomic clocks. It introduces an adaptive Kalman filtering algorithm for the disciplining of a rubidium atomic clock, utilizing autocovariance least squares (ALS) to estimate the clock's noise parameters. The experimental results demonstrate that the proposed algorithm achieves a high estimation accuracy. The standard deviation of the clock error between the steered rubidium atomic clock 1 Pulse Per Second (1PPS) and Coordinated Universal Time (UTC) provided by the National Time Service Center (NTSC) is better than 2.568 nanoseconds(ns), with peak-to-peak values improving to within 11.358 ns. Notably, its frequency stability is reduced to 3.06 x 10-13 @100,000 s. The results for the rubidium atomic clock demonstrate that the adaptive Kalman filtering algorithm proposed herein constitutes an accurate and effective control strategy for the rubidium atomic clock discipline. |
| WOS关键词 | LEAST-SQUARES METHOD |
| WOS研究方向 | Chemistry ; Engineering ; Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:001277502500001 |
| 出版者 | MDPI |
| 源URL | [http://210.72.145.45/handle/361003/14487]  |
| 专题 | 国家授时中心_授时方法与技术研究室 |
| 通讯作者 | Wu, Jianfeng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Time Reference & Applicat, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Univ Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Kun,Guan, Xiaolong,Ren, Xiaoqian,et al. Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter[J]. SENSORS,2024,24(14):17. |
| APA | Liu, Kun,Guan, Xiaolong,Ren, Xiaoqian,&Wu, Jianfeng.(2024).Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter.SENSORS,24(14),17. |
| MLA | Liu, Kun,et al."Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter".SENSORS 24.14(2024):17. |
入库方式： OAI收割
来源：国家授时中心
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