{"title":"关于UTC的系统不确定度","authors":"D. Matsakis","doi":"10.1109/FCS.2016.7546765","DOIUrl":null,"url":null,"abstract":"The International Bureau of Weights and Measures (BIPM) urrently computes the systematic uncertainties between Coordinated Universal Time (UTC) and the UTC(k), its realizations by participating labs k, using an algorithm that does not take into account the effects of the clock model in the computation of UTC. We present an algorithm that computes the systematic uncertainty for UTC-UTC(k) as the uncertainty of an optimal comparison between UTC(k) and all the other UTC realizations. The weights to be assigned to the links between lab k and each other lab are determined from a matrix calculation that incorporates the correlations between the links, and assures that the sum of the weights is unity via a Lagrange multiplier. We speculate that an iterative approach may be sufficient to allow for the effect of the uncertainties of each lab in the determination of the uncertainties of the other labs.","PeriodicalId":122928,"journal":{"name":"2016 IEEE International Frequency Control Symposium (IFCS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"On systematic uncertainties in UTC\",\"authors\":\"D. Matsakis\",\"doi\":\"10.1109/FCS.2016.7546765\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The International Bureau of Weights and Measures (BIPM) urrently computes the systematic uncertainties between Coordinated Universal Time (UTC) and the UTC(k), its realizations by participating labs k, using an algorithm that does not take into account the effects of the clock model in the computation of UTC. We present an algorithm that computes the systematic uncertainty for UTC-UTC(k) as the uncertainty of an optimal comparison between UTC(k) and all the other UTC realizations. The weights to be assigned to the links between lab k and each other lab are determined from a matrix calculation that incorporates the correlations between the links, and assures that the sum of the weights is unity via a Lagrange multiplier. We speculate that an iterative approach may be sufficient to allow for the effect of the uncertainties of each lab in the determination of the uncertainties of the other labs.\",\"PeriodicalId\":122928,\"journal\":{\"name\":\"2016 IEEE International Frequency Control Symposium (IFCS)\",\"volume\":\"8 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2016 IEEE International Frequency Control Symposium (IFCS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/FCS.2016.7546765\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Frequency Control Symposium (IFCS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/FCS.2016.7546765","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The International Bureau of Weights and Measures (BIPM) urrently computes the systematic uncertainties between Coordinated Universal Time (UTC) and the UTC(k), its realizations by participating labs k, using an algorithm that does not take into account the effects of the clock model in the computation of UTC. We present an algorithm that computes the systematic uncertainty for UTC-UTC(k) as the uncertainty of an optimal comparison between UTC(k) and all the other UTC realizations. The weights to be assigned to the links between lab k and each other lab are determined from a matrix calculation that incorporates the correlations between the links, and assures that the sum of the weights is unity via a Lagrange multiplier. We speculate that an iterative approach may be sufficient to allow for the effect of the uncertainties of each lab in the determination of the uncertainties of the other labs.
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