ISO 17123-8:2015
(Main)Optics and optical instruments — Field procedures for testing geodetic and surveying instruments — Part 8: GNSS field measurement systems in real-time kinematic (RTK)
Optics and optical instruments — Field procedures for testing geodetic and surveying instruments — Part 8: GNSS field measurement systems in real-time kinematic (RTK)
ISO 17123-8:2015 specifies field procedures to be adopted when determining and evaluating the precision (repeatability) of Global Navigation Satellite System (GNSS) field measurement systems (this includes GPS, GLONASS, as well as the future systems like GALILEO) in real-time kinematic (GNSS RTK) and their ancillary equipment when used in building, surveying, and industrial measurements. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the required application at hand and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature.
Optique et instruments d'optique — Méthodes d'essai sur site des instruments géodésiques et d'observation — Partie 8: Systèmes de mesure GNSS sur site en temps réel cinématique
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INTERNATIONAL ISO
STANDARD 17123-8
Second edition
2015-06-15
Optics and optical instruments —
Field procedures for testing geodetic
and surveying instruments —
Part 8:
GNSS field measurement systems in
real-time kinematic (RTK)
Optique et instruments d’optique — Méthodes d’essai sur site des
instruments géodésiques et d’observation —
Partie 8: Systèmes de mesure GNSS sur site en temps réel cinématique
Reference number
©
ISO 2015
© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General . 2
4.1 Preamble . 2
4.2 Requirements . 2
4.3 Concept of the test procedures . 2
4.4 Procedure 1: Simplified test procedure . 3
4.5 Procedure 2: Full test procedure . 4
5 Simplified test procedure . 4
5.1 Measurements . 4
5.2 Calculation . 5
6 Full test procedure . 5
6.1 Measurements . 5
6.2 Calculation . 6
6.2.1 General. 6
6.2.2 Preliminary measurement check . 6
6.2.3 Calculation of statistical values . 6
6.3 Statistical tests . 7
6.3.1 General. 7
6.3.2 Question a) . 8
6.3.3 Question b). 8
6.3.4 Question c) . 9
6.3.5 Question d) . 9
6.4 Combined standard uncertainty evaluation (Type A and Type B) . 9
Annex A (informative) Example of the simplified test procedure .12
Annex B (informative) Example of the full test procedure .13
Annex C (informative) Example for the calculation of a combined uncertainty budget (Type
A and Type B) .18
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 172, Optics and photonics, Subcommittee SC 6,
Geodetic and surveying instruments.
This second edition cancels and replaces the first edition (ISO 17123-8:2007), which has been technically
revised.
ISO 17123 consists of the following parts, under the general title Optics and optical instruments — Field
procedures for testing geodetic and surveying instruments:
— Part 1: Theory
— Part 2: Levels
— Part 3: Theodolites
— Part 4: Electro-optical distance meters (EDM measurements to reflectors)
— Part 5: Total stations
— Part 6: Rotating lasers
— Part 7: Optical plumbing instruments
— Part 8: GNSS field measurement systems in real-time kinematic (RTK)
Annex A, Annex B, and Annex C of this part of ISO 17123 are for information only.
iv © ISO 2015 – All rights reserved
Introduction
This part of ISO 17123 specifies field procedures for adoption when determining and evaluating the
uncertainty of measurement results obtained by geodetic instruments and their ancillary equipment,
when used in building and surveying measuring tasks. Primarily, these tests are intended to be field
verifications of suitability of a particular instrument for the immediate task. They are not proposed as
tests for acceptance or performance evaluations that are more comprehensive in nature.
The definition and concept of uncertainty as a quantitative attribute to the final result of measurement
was developed mainly in the last two decades, even though error analysis has already long been a part
of all measurement sciences. After several stages, the CIPM (Comité Internationale des Poids et Mesures)
referred the task of developing a detailed guide to ISO. Under the responsibility of the ISO Technical
Advisory Group on Metrology (TAG 4) and in conjunction with six worldwide metrology organizations,
a guidance document on the expression of measurement uncertainty was compiled with the objective
of providing rules for use within standardization, calibration, laboratory, accreditation, and metrology
services. ISO/IEC Guide 98-3 was first published as the Guide to the Expression of Uncertainty in
Measurement (GUM) in 1995.
With the introduction of uncertainty in measurement in ISO 17123 (all parts), it is intended to finally
provide a uniform, quantitative expression of measurement uncertainty in geodetic metrology with the
aim of meeting the requirements of customers.
ISO 17123 (all parts) provides not only a means of evaluating the precision (experimental standard
deviation) of an instrument but also a tool for defining an uncertainty budget, which allows for the
summation of all uncertainty components, whether they are random or systematic, to a representative
measure of accuracy, i.e. the combined standard uncertainty.
ISO 17123 (all parts) therefore provides, for defining for each instrument investigated by the procedures,
a proposal for additional, typical influence quantities, which can be expected during practical use. The
customer can estimate, for a specific application, the relevant standard uncertainty components in
order to derive and state the uncertainty of the measuring result.
INTERNATIONAL STANDARD ISO 17123-8:2015(E)
Optics and optical instruments — Field procedures for
testing geodetic and surveying instruments —
Part 8:
GNSS field measurement systems in real-time kinematic
(RTK)
1 Scope
This part of ISO 17123 specifies field procedures to be adopted when determining and evaluating the
precision (repeatability) of Global Navigation Satellite System (GNSS) field measurement systems (this
includes GPS, GLONASS, as well as the future systems like GALILEO) in real-time kinematic (GNSS
RTK) and their ancillary equipment when used in building, surveying, and industrial measurements.
Primarily, these tests are intended to be field verifications of the suitability of a particular instrument
for the required application at hand and to satisfy the requirements of other standards. They are not
proposed as tests for acceptance or performance evaluations that are more comprehensive in nature.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 3534-1, Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in
probability
ISO 9849, Optics and optical instruments — Geodetic and surveying instruments — Vocabulary
ISO 12858-2, Optics and optical instruments — Ancillary devices for geodetic instruments — Part 2: Tripods
ISO 17123-1, Optics and optical instruments — Field procedures for testing geodetic and surveying
instruments — Part 1: Theory
ISO 17123-2, Optics and optical instruments — Field procedures for testing geodetic and surveying
instruments — Part 2: Levels
ISO 17123-5, Optics and optical instruments — Field procedures for testing geodetic and surveying
instruments — Part 5: Total stations
ISO/IEC Guide 98-3:2008, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in
measurement (GUM: 1995)
ISO/IEC Guide 99:2007, International vocabulary of metrology — Basic and general concepts and associated
terms (VIM)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3534-1, ISO 9849, ISO 17123-1,
ISO 17123-2, ISO 17123-5, ISO/IEC Gu
...
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