1、September 2017English price group 14No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.180.30!%mPe“2744566www.din.d
2、eDIN ISO 17123-4Optics and optical instruments Field procedures for testing geodetic and surveying instruments Part 4: Electrooptical distance meters (EDM measurements to reflectors) (ISO 171234:2012),English translation of DIN ISO 17123-4:2017-09Optik und optische Instrumente Feldprfverfahren geodt
3、ischer Instrumente Teil 4: Elektrooptische Distanzmesser (EDMMessungen mit Reflektoren) (ISO 171234:2012),Englische bersetzung von DIN ISO 17123-4:2017-09Optique et instruments doptique Mthodes dessai sur site des instruments godsiques et dobservation Partie 4: Tlmtres lectrooptiques (mesurages MED
4、avec rflecteurs) (ISO 171234:2012),Traduction anglaise de DIN ISO 17123-4:2017-09www.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 28 pages09.17 DIN ISO 17123-4:2017-09 2 A comma is used as the decimal m
5、arker. Contents Page National foreword . 3 National Annex (informative) Bibliography . 4 Foreword 5 Introduction 6 1 Scope 7 2 Normative references 7 3 Terms and definitions . 8 4 General 8 4.1 Requirements . 8 4.2 Procedure 1: Simplified test procedure 8 4.3 Procedure 2: Full test procedure (Type A
6、 evaluation of standard uncertainty) 8 5 Simplified test procedure . 9 5.1 Configuration of the test field . 9 5.2 Measurements . 10 5.3 Calculation 10 5.4 Further investigations 10 6 Full test procedure 11 6.1 Configuration of the test line . 11 6.2 Measurements . 12 6.3 Calculation 13 6.4 Statisti
7、cal tests 16 6.5 Combined standard uncertainty evaluation (Type A and Type B) . 18 Annex A (informative) Example of the simplified test procedure . 19 Annex B (informative) Example of the full test procedure 21 Annex C (informative) Example for the calculation of a combined uncertainty budget (Type
8、A and Type B) 25 Bibliography . 28 DIN ISO 17123-4:2017-09 3 National foreword International Standard ISO 17123-4:2012, Optics and optical instruments Field procedures for testing geodetic and surveying instruments Part 4: Electro-optical distance meters (EDM measurements to reflectors) has been ado
9、pted in this standard without any modification. This document has been prepared by Technical Committee ISO/TC 172 “Optics and photonics”, Subcommittee SC 6 “Geodetic and surveying instruments” (Secretariat: SNV, Switzerland). The responsible German body involved in its preparation was DIN-Normenauss
10、chuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-03-04 AA “Geodetic and surveying instruments (national Mirror Committee to ISO/TC 172/SC 6)”. Attention is drawn to the possibility that some of the elements of this document may be the subject of paten
11、t rights. DIN shall not be held responsible for identifying any or all such patent rights. 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: Theodoli
12、tes 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) Part 9: Terrestrial laser scanners (in preparation) Part 10: Non-prism
13、measurement (reflector less distance measurements by total stations) (in preparation) It is intended to adopt all ISO Standards of ISO/TC 172/SC 6 as German national standards. Annexes A, B and C of this part of ISO 17123 are for information only. The DIN Standards corresponding to the International
14、 Standards referred to in this document are as follows: ISO 17123-1 DIN ISO 17123-1 ISO 80000-3 DIN ISO 80000-3 This document includes national footnotes. DIN ISO 17123-4:2017-09 4 National Annex (informative) Bibliography DIN ISO 17123-1, Optics and optical instruments Field procedures for testing
15、geodetic and surveying instruments Part 1: Theory (ISO 17123-1:2014) DIN ISO 80000-3, Quantities and units Part 3: Space and time ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Interna
16、tional 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
17、ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical co
18、mmittees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the
19、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.ISO 17123-4 was prepared by Technical Committee ISO/TC 172, Optics and photonics, Subcommittee SC 6, Geodetic and surveying inst
20、ruments.This second edition cancels and replaces the first edition (ISO 17123-4:2001), 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
21、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)Annexes A, B and C of this part of ISO 1
22、7123 are for information only.5 DIN ISO 17123-4:2017-09 IntroductionThis 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 surveyin
23、g 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
24、as a quantitative attribute to the final result of measurement were developed mainly in the last two decades, even though error analysis has long been a part of all measurement sciences. After several stages, the CIPM (Comit Internationale des Poids et Mesures) referred the task of developing a deta
25、iled 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 stan
26、dardization, 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 provid
27、e 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
28、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 each instrument investigated by the procedures, a pro
29、posal 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.6 DIN ISO 17123-4:2017-09 1 ScopeTh
30、is part of ISO 17123 specifies field procedures to be adopted when determining and evaluating the precision (repeatability) of electro-optical distance meters (EDM instruments) and their ancillary equipment when used in building and surveying measurements. This part of ISO 17123 is applicable to ref
31、lector-type EDM instruments only and is not designed to determine the precision of non-prism EDM types. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the immediate task at hand and to satisfy the requirements of other standards. They
32、are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature.This part of ISO 17123 can be thought of as one of the first steps in the process of evaluating the uncertainty of a measurement (more specifically a measurand). The uncertainty of a result of a
33、 measurement is dependent on a number of parameters. Therefore we differentiate between different measures of accuracy and objectives in testing, like repeatability, reproducibility (e.g. between day repeatability), and of course a thorough assessment of all possible error sources, as prescribed by
34、ISO/IEC Guide 98-3 and by ISO 17123-1.These field procedures have been developed specifically for in situ applications without the need for special ancillary equipment and are purposefully designed to minimize atmospheric influences.2 Normative referencesThe following referenced documents are indisp
35、ensable for the application of this document. 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
36、in probabilityISO 4463-1, Measurement methods for building Setting-out and measurement Part 1: Planning and organization, measuring procedures, acceptance criteriaISO 7077, Measuring methods for building General principles and procedures for the verification of dimensional complianceISO 7078, Buildi
37、ng construction Procedures for setting out, measurement and surveying Vocabulary and guidance notesISO 9849, Optics and optical instruments Geodetic and surveying instruments VocabularyISO 17123-1, Optics and optical instruments Field procedures for testing geodetic and surveying instruments Part 1:
38、 TheoryISO/IEC Guide 98-3, Uncertainty of measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)ISO/IEC Guide 99, International vocabulary of metrology Basic and general concepts and associated terms (VIM)7 DIN ISO 17123-4:2017-09 3 Terms and definitionsFor the purposes
39、 of this document, the terms and definitions given in ISO 4463-1, ISO 7077, ISO 7078, ISO 9849, ISO 17123-1, ISO/IEC Guide 98-3 and ISO/IEC Guide 99 apply.4 General4.1 RequirementsBefore commencing surveying, it is important that the operator investigates that the precision in use of the measuring e
40、quipment is appropriate to the intended measuring task.The EDM instrument and its ancillary equipment shall be in known and acceptable states of permanent adjustment according to the methods specified in the manufacturers handbook, and used with tripods, forced centring equipment and reflectors as r
41、ecommended by the manufacturer.This part of ISO 17123 describes two different field procedures as given in Clauses 5 and 6. The operator shall choose the procedure which is most relevant to the projects particular requirements.4.2 Procedure 1: Simplified test procedureThe simplified test procedure p
42、rovides an estimate as to whether the precision of a given EDM equipment is within the specified permitted deviation according to ISO 4463-1.The simplified test procedure is based on a limited number of measurements. Therefore, a significant standard deviation and consequently standard uncertainty c
43、annot be obtained. If a more precise assessment of the EDM instrument under field conditions is required, it is recommended to adopt the more rigorous full test procedure as given in Clause 6.This test procedure relies on having a test field with distances which are accepted as true values. If such
44、a test field is not available, it is necessary to determine the unknown distances, using an EDM instrument of higher accuracy than that investigated in this test procedure. If no EDM with higher accuracy is available, the full test procedure has to be applied.4.3 Procedure 2: Full test procedure (Ty
45、pe A evaluation of standard uncertainty)The full test procedure shall be adopted to determine the best achievable measure of precision of a particular EDM instrument and its ancillary equipment under field conditions, described by the operator.The full test procedure is based on measurements of dist
46、ances in all combinations on a test line without nominal values. The experimental standard deviation of a single distance measurement is determined from a least squares adjustment of the distances in all combinations. Scale errors of an EDM instrument cannot be detected by this procedure. But scale
47、errors in general do not have any influence, neither on the experimental standard deviation, s, nor on the zero-point correction, . In order to determine the stability of the scale, the measuring frequency of the EDM instrument can be checked by means of a frequency meter.8 DIN ISO 17123-4:2017-09 T
48、he results of these tests are influenced by meteorological conditions. These conditions will include variations in air temperature and air pressure. Actual meteorological data shall be measured in order to derive atmospheric corrections, which shall be added to the raw distances. The particular cond
49、itions to be taken into account may vary, depending on the location where the tasks are to be undertaken. These conditions shall include variations in air temperature, wind speed, degree of cloudiness and visibility.N1)Note should also be taken of the actual weather conditions at the time of measurement and the type of surface above which the measurements are made. The conditions chosen for the tests should match tho
