Cargando…
Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps
Atomic clock frequency jumps directly influence the accuracy and reliability of timekeeping systems. The necessary corrections are typically implemented by postprocessing mutual comparison data between multiple atomic clocks based on the overly strict assumption that these atomic clocks are independ...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696367/ https://www.ncbi.nlm.nih.gov/pubmed/36433590 http://dx.doi.org/10.3390/s22228995 |
_version_ | 1784838299710390272 |
---|---|
author | Liu, Mochi Chen, Yu Xu, Qian Wang, Yuzhuo Gao, Yuan Zhang, Aimin |
author_facet | Liu, Mochi Chen, Yu Xu, Qian Wang, Yuzhuo Gao, Yuan Zhang, Aimin |
author_sort | Liu, Mochi |
collection | PubMed |
description | Atomic clock frequency jumps directly influence the accuracy and reliability of timekeeping systems. The necessary corrections are typically implemented by postprocessing mutual comparison data between multiple atomic clocks based on the overly strict assumption that these atomic clocks are independent of each other. This paper describes the concept of a mirror clock, which enables atomic clock frequency jumps to be identified in real time without any assumptions. By comparing whether the real measured data and a corresponding mirror clock prediction fall within a confidence interval determined by the uncertainty of past physical clock data, atomic clock frequency jumps can be effectively identified and corrected. The results of several experiments using three hydrogen masers verify that the precision and recall of simultaneous jump identification reach 96.41% and 73.49%, respectively. |
format | Online Article Text |
id | pubmed-9696367 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96963672022-11-26 Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps Liu, Mochi Chen, Yu Xu, Qian Wang, Yuzhuo Gao, Yuan Zhang, Aimin Sensors (Basel) Article Atomic clock frequency jumps directly influence the accuracy and reliability of timekeeping systems. The necessary corrections are typically implemented by postprocessing mutual comparison data between multiple atomic clocks based on the overly strict assumption that these atomic clocks are independent of each other. This paper describes the concept of a mirror clock, which enables atomic clock frequency jumps to be identified in real time without any assumptions. By comparing whether the real measured data and a corresponding mirror clock prediction fall within a confidence interval determined by the uncertainty of past physical clock data, atomic clock frequency jumps can be effectively identified and corrected. The results of several experiments using three hydrogen masers verify that the precision and recall of simultaneous jump identification reach 96.41% and 73.49%, respectively. MDPI 2022-11-21 /pmc/articles/PMC9696367/ /pubmed/36433590 http://dx.doi.org/10.3390/s22228995 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Mochi Chen, Yu Xu, Qian Wang, Yuzhuo Gao, Yuan Zhang, Aimin Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title | Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title_full | Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title_fullStr | Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title_full_unstemmed | Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title_short | Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps |
title_sort | mirror clock: a strategy for identifying atomic clock frequency jumps |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9696367/ https://www.ncbi.nlm.nih.gov/pubmed/36433590 http://dx.doi.org/10.3390/s22228995 |
work_keys_str_mv | AT liumochi mirrorclockastrategyforidentifyingatomicclockfrequencyjumps AT chenyu mirrorclockastrategyforidentifyingatomicclockfrequencyjumps AT xuqian mirrorclockastrategyforidentifyingatomicclockfrequencyjumps AT wangyuzhuo mirrorclockastrategyforidentifyingatomicclockfrequencyjumps AT gaoyuan mirrorclockastrategyforidentifyingatomicclockfrequencyjumps AT zhangaimin mirrorclockastrategyforidentifyingatomicclockfrequencyjumps |