Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter

doi:10.3390/s24144495

NTSC-IR > 授时方法与技术研究室

	Disciplining a Rubidium Atomic Clock Based on Adaptive Kalman Filter
	Liu, Kun 1,2; Guan, Xiaolong 1; Ren, Xiaoqian 1; Wu, Jianfeng1,2,3
	2024-07-01
发表期刊	SENSORS
卷号	24 期号:14 页码:17
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.
关键词	adaptive Kalman filter rubidium atomic clock autocovariance least squares time and frequency Allan deviation
DOI	10.3390/s24144495
关键词[WOS]	LEAST-SQUARES METHOD
语种	英语
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
WOS类目	Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS记录号	WOS:001277502500001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14487
专题	授时方法与技术研究室
通讯作者	Wu, Jianfeng
作者单位	1.Chinese Acad Sci, Univ Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Time Reference & Applicat, 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.