ISO 17123-1:2014

INTERNATIONAL ISO
STANDARD 17123-1
Third edition
2014-08-15
Optics and optical instruments —
Field procedures for testing geodetic
and surveying instruments —
Part 1:
Theory
Optique et instruments d’optique — Méthodes d’essai sur site pour les
instruments géodésiques et d’observation —
Partie 1: Théorie
Reference number
ISO 17123-1:2014(E)
©
ISO 2014

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ISO 17123-1:2014(E)

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ISO 17123-1:2014(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
3.1 General metrological terms . 1
3.2 Terms specific to this part of ISO 17123 . 3
3.3 The term “uncertainty” . 5
3.4 Symbols . 6
4 Evaluating uncertainty of measurement . 8
4.1 General . 8
4.2 Type A evaluation of standard uncertainty . 9
4.3 Type B evaluation of standard uncertainty .18
4.4 Law of propagation of uncertainty and combined standard uncertainty .19
4.5 Expanded uncertainty .21
5 Reporting uncertainty .22
6 Summarized concept of uncertainty evaluation .22
7 Statistical tests .23
7.1 General .23
7.2 Question a): is the experimental standard deviation, s, smaller than or equal to a give
...