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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/22/8995 |
| _version_ | 1827643619596566528 |
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| author | Mochi Liu Yu Chen Qian Xu Yuzhuo Wang Yuan Gao Aimin Zhang |
| author_facet | Mochi Liu Yu Chen Qian Xu Yuzhuo Wang Yuan Gao Aimin Zhang |
| author_sort | Mochi Liu |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T17:59:41Z |
| format | Article |
| id | doaj.art-04ab53df4b8d459b8e523de758275207 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T17:59:41Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-04ab53df4b8d459b8e523de7582752072023-11-24T09:59:06ZengMDPI AGSensors1424-82202022-11-012222899510.3390/s22228995Mirror Clock: A Strategy for Identifying Atomic Clock Frequency JumpsMochi Liu0Yu Chen1Qian Xu2Yuzhuo Wang3Yuan Gao4Aimin Zhang5National Institute of Metrology (NIM), Beijing 100029, ChinaChina National Intellectual Property Administration, Beijing 100088, ChinaNational Institute of Metrology (NIM), Beijing 100029, ChinaNational Institute of Metrology (NIM), Beijing 100029, ChinaNational Institute of Metrology (NIM), Beijing 100029, ChinaNational Institute of Metrology (NIM), Beijing 100029, ChinaAtomic 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.https://www.mdpi.com/1424-8220/22/22/8995atomic clockfrequency jumprandom pursuit strategypredictability |
| spellingShingle | Mochi Liu Yu Chen Qian Xu Yuzhuo Wang Yuan Gao Aimin Zhang Mirror Clock: A Strategy for Identifying Atomic Clock Frequency Jumps Sensors atomic clock frequency jump random pursuit strategy predictability |
| 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 | atomic clock frequency jump random pursuit strategy predictability |
| url | https://www.mdpi.com/1424-8220/22/22/8995 |
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