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

Fingerprint

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",
issn = "0018-9456",
publisher = "Institute of Electrical and Electronic Engineers IEEE",
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

VL - 52

SP - 495

EP - 499

JO - IEEE Transactions on Instrumentation and Measurement

JF - IEEE Transactions on Instrumentation and Measurement

SN - 0018-9456

IS - 2

ER -