一种原子钟组加权的优化策略

doi:10.3969/j.issn.1000-1158.2022.04.16

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Abstract Atomic clock group integration technology is widely used in time keeping systems to maintain the accuracy, stability and continuity of time scale. However, there is always a certain correlation between atomic clocks in the same laboratory, which limits the performance of atomic time scales. Based on the correlation between the atomic clock ensemble and its covariance matrix, this paper investigates the influence of same environmental factors on the frequency characteristics of atomic clock. A new weighting method for atomic clock ensemble is designed with optimization theory. It was applied to the cesium clock ensemble at NIM. The results showed the new method could reduce greatly the frequency instability of the clock ensemble.

Key words： metrology atomic clock ensemble time scale UTC optimization weighting

Received: 16 September 2020 Published: 08 April 2022

PACS:

TB939

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	Articles by authors
	YU Hang
	ZHANG Lei
	SONG Wen-xia
	WANG Yu-zhuo

Cite this article:

YU Hang,ZHANG Lei,SONG Wen-xia, et al. An Optimized Weighting Method for Atomic Clock Ensemble[J]. Acta Metrologica Sinica, 2022, 43(4): 536-541.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.04.16 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I4/536

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