Analysis of International Comparisons with the Minimum Variance Method

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)

    Abstract

    The minimum variance (MV) method is applied to the analysis of international comparisons. Simple evaluation criteria for choosing a proper noise model are described. Allan variance study of the data from a comparison of Zener voltage standards indicates a nearly 1/f/sup 2/ type instability after removal of linear drift. When applied to the comparison data, the MV method with 1/f/sup 2/ noise model gives the closest agreement between participants. Almost identical results are given by a simple two-point nearest neighbor linear regression, whereas assumptions of 1/f and especially white noise give significantly larger scatter of results. Transportation clearly degrades the stability of the transfer standard. The instability can be taken into account by correct, time dependent weighting of the data.
    Original languageEnglish
    Pages (from-to)495-499
    Number of pages5
    JournalIEEE Transactions on Instrumentation and Measurement
    Volume52
    Issue number2
    DOIs
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed

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    White noise
    white noise
    Linear regression
    regression analysis
    evaluation
    Electric potential
    electric potential

    Keywords

    • 1/f noise
    • international comparisons
    • metrology
    • mutual recognition arrangement (MRA)
    • reference value
    • Zener voltage standard

    Cite this

    @article{4b9ccefca7254bf6a1e47d067986ab1f,
    title = "Analysis of International Comparisons with the Minimum Variance Method",
    abstract = "The minimum variance (MV) method is applied to the analysis of international comparisons. Simple evaluation criteria for choosing a proper noise model are described. Allan variance study of the data from a comparison of Zener voltage standards indicates a nearly 1/f/sup 2/ type instability after removal of linear drift. When applied to the comparison data, the MV method with 1/f/sup 2/ noise model gives the closest agreement between participants. Almost identical results are given by a simple two-point nearest neighbor linear regression, whereas assumptions of 1/f and especially white noise give significantly larger scatter of results. Transportation clearly degrades the stability of the transfer standard. The instability can be taken into account by correct, time dependent weighting of the data.",
    keywords = "1/f noise, international comparisons, metrology, mutual recognition arrangement (MRA), reference value, Zener voltage standard",
    author = "Panu Helist{\"o} and Heikki Sepp{\"a}",
    year = "2003",
    doi = "10.1109/TIM.2003.810461",
    language = "English",
    volume = "52",
    pages = "495--499",
    journal = "IEEE Transactions on Instrumentation and Measurement",
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    number = "2",

    }

    Analysis of International Comparisons with the Minimum Variance Method. / Helistö, Panu; Seppä, Heikki.

    In: IEEE Transactions on Instrumentation and Measurement, Vol. 52, No. 2, 2003, p. 495-499.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Analysis of International Comparisons with the Minimum Variance Method

    AU - Helistö, Panu

    AU - Seppä, Heikki

    PY - 2003

    Y1 - 2003

    N2 - The minimum variance (MV) method is applied to the analysis of international comparisons. Simple evaluation criteria for choosing a proper noise model are described. Allan variance study of the data from a comparison of Zener voltage standards indicates a nearly 1/f/sup 2/ type instability after removal of linear drift. When applied to the comparison data, the MV method with 1/f/sup 2/ noise model gives the closest agreement between participants. Almost identical results are given by a simple two-point nearest neighbor linear regression, whereas assumptions of 1/f and especially white noise give significantly larger scatter of results. Transportation clearly degrades the stability of the transfer standard. The instability can be taken into account by correct, time dependent weighting of the data.

    AB - The minimum variance (MV) method is applied to the analysis of international comparisons. Simple evaluation criteria for choosing a proper noise model are described. Allan variance study of the data from a comparison of Zener voltage standards indicates a nearly 1/f/sup 2/ type instability after removal of linear drift. When applied to the comparison data, the MV method with 1/f/sup 2/ noise model gives the closest agreement between participants. Almost identical results are given by a simple two-point nearest neighbor linear regression, whereas assumptions of 1/f and especially white noise give significantly larger scatter of results. Transportation clearly degrades the stability of the transfer standard. The instability can be taken into account by correct, time dependent weighting of the data.

    KW - 1/f noise

    KW - international comparisons

    KW - metrology

    KW - mutual recognition arrangement (MRA)

    KW - reference value

    KW - Zener voltage standard

    U2 - 10.1109/TIM.2003.810461

    DO - 10.1109/TIM.2003.810461

    M3 - Article

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    JO - IEEE Transactions on Instrumentation and Measurement

    JF - IEEE Transactions on Instrumentation and Measurement

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