{"title":"Research on Improved Dynamic Time Scale Algorithm for Time-keeping System","authors":"Yu Zhang, Shao-wu Dong, Jie Wang, Shu-hong Zhao, Hai-bo Yuan, Hui-jie Song, Meng Jiang","doi":"10.1007/s12647-024-00794-7","DOIUrl":null,"url":null,"abstract":"<div><p>The study of time scale facilitates stable and reliable operation of time-keeping systems. Algos algorithm is a common method for calculating the time scale. Improving the stability of the time scale is an important issue in the research of time-keeping technology. In this paper, an optimization method of the clock difference data preprocessing in algorithm is proposed. We apply the theory of optimal weight to the calculation of time scale weight for improving the stability of the dynamic time scale. The proposed algorithm is called Improved Dynamic Algos-like (IDAlgos). We use the IDAlgos for joint experiments of cesium clocks ensemble, hydrogen masers ensemble, and hydrogen-cesium clocks ensemble, respectively. The results compared with Conventional Dynamic Algos-like (CDAlgos) show that i) for the case of cesium clocks ensemble, the short-term stability has been improved, the stability increased by 22.5% in 2 h and 20.8% in 4 h. ii) for the case of hydrogen masers ensemble, the stability increased by 18.3% in 1 h and 31.3% in 128 h, that is, both long-term and short-term stability has been improved. iii) for the clock ensemble combined of hydrogen masers and cesium clocks, the long-term and short-term stability has been greatly improved,among them, the stability increased by 64.6% in 1 h and 69.3% in 128 h. Consequently, the IDAlgos has obvious improving on the stability of the time scale</p></div>","PeriodicalId":689,"journal":{"name":"MAPAN","volume":"40 1","pages":"217 - 227"},"PeriodicalIF":1.0000,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"MAPAN","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s12647-024-00794-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}
引用次数: 0
Abstract
The study of time scale facilitates stable and reliable operation of time-keeping systems. Algos algorithm is a common method for calculating the time scale. Improving the stability of the time scale is an important issue in the research of time-keeping technology. In this paper, an optimization method of the clock difference data preprocessing in algorithm is proposed. We apply the theory of optimal weight to the calculation of time scale weight for improving the stability of the dynamic time scale. The proposed algorithm is called Improved Dynamic Algos-like (IDAlgos). We use the IDAlgos for joint experiments of cesium clocks ensemble, hydrogen masers ensemble, and hydrogen-cesium clocks ensemble, respectively. The results compared with Conventional Dynamic Algos-like (CDAlgos) show that i) for the case of cesium clocks ensemble, the short-term stability has been improved, the stability increased by 22.5% in 2 h and 20.8% in 4 h. ii) for the case of hydrogen masers ensemble, the stability increased by 18.3% in 1 h and 31.3% in 128 h, that is, both long-term and short-term stability has been improved. iii) for the clock ensemble combined of hydrogen masers and cesium clocks, the long-term and short-term stability has been greatly improved,among them, the stability increased by 64.6% in 1 h and 69.3% in 128 h. Consequently, the IDAlgos has obvious improving on the stability of the time scale
期刊介绍:
MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology.
The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.