1、October 2009DEUTSCHE NORM English price group 15No part of this standard 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 35.040!$Z7L“1552041www
2、.din.deDDIN EN ISO 6709Standard representation of geographic point location by coordinatesEnglish version of DIN EN ISO 6709:2009-10Standarddarstellung fr geographische Punkte durch Koordinaten Englische Fassung DIN EN ISO 6709:2009-10www.beuth.deDocument comprises pages36 (ISO 6709:2008,(ISO 6709:2
3、00 8einschlielich Cor. 1:2009), including Cor. 1:2009) DIN EN ISO 6709:2009-10 2 and finish of text introduced or altered by this corrigendum is indicated in the text by tags The first edition of this International Standard provided for the representation of latitude and longitude for geographic poi
4、nt locations. This second edition extends the use of representation to applications requiring latitude or longitude values to be quoted separately, for example when quoting a difference in two meridian values. It also extends the representation of latitude and longitude to allow the values for each
5、to be held in separate numeric fields. This second edition additionally provides for the representation of horizontal point location by coordinates other than latitude and longitude, and makes provisions for a variable-length format which has the flexibility to cover these various requirements. PQ .
6、National foreword This document has been prepared by Technical Committee ISO/TC 211 “Geographic information/Geomatics” (Secretariat: ISIRI, Iran) and has been adopted as EN ISO 6709:2009 by Technical Committee CEN/TC 287 “Geographic information” (Secretariat: NEN, Netherlands). The responsible Germa
7、n body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committee NA 005-03-03 AA Kartographie und Geoinformation. This document includes Technical Corrigendum 1 to ISO 6709:2008 (ISO 6709:2008/Cor. 1:2009). The start This s
8、econd edition is primarily intended for data interchange between computer systems. Informative Annex D, which summarises the different requirements at the human interface, has been added. The first edition used the term altitude to describe vertical position. This International Standard uses the mor
9、e general term height and also allows for vertical location to be described as depth. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO/IEC 8859-1 DIN 66303 ISO 19107 DIN EN ISO 19107 ISO 19111:2007 DIN EN ISO 19111 ISO 19115:2003 DIN EN
10、ISO 19115 ISO 19118 DIN EN ISO 19118 ISO 19133 DIN EN ISO 19133 DIN EN ISO 6709:2009-10 3 National Annex NA (informative) Bibliography DIN 66303, Information technology 8 bit code DIN EN ISO 19107, Geographic information Spatial schema DIN EN ISO 19111, Geographic information Spatial referencing by
11、coordinates DIN EN ISO 19115, Geographic information Metadata DIN EN ISO 19118, Geographic information Encoding DIN EN ISO 19133, Geographic information Location-based services Tracking and navigation DIN EN ISO 6709:2009-10 4 This page is intentionally blank EUROPEAN STANDARDNORME EUROPENNEEUROPISC
12、HE NORMEN ISO 6709June 2009ICS 35.040English VersionStandard representation of geographic point location bycoordinates (ISO 6709:2008, including Cor. 1:2009)Reprsentation normalise des latitude, longitude etaltitude pour la localisation des points gographiques 6709:2008, Cor. 1:2009 inclus)Standardd
13、arstellung fr geographische Punkte durchKoordinaten (ISO 6709:2008, einschlielich Cor. 1:2009)This European Standard was approved by CEN on 12 June 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the statu
14、s of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A ve
15、rsion in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Den
16、mark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIO
17、NEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 6709:2009: E(ISOContents Page Foreword 3 Introduction 4 1 Scope. 5 2 Conformance 5 3 Normati
18、ve references. 5 4 Terms and definitions 6 5 Abbreviated terms 7 6 Requirements for the representation of geographic point location . 7 6.1 Conceptual model for geographic point locations . 7 6.2 Elements required for geographic point location . 9 6.3 Coordinate Reference System identification. 9 6.
19、4 Representation of horizontal position 9 6.5 Representation of vertical position 10 6.6 Coordinate resolution 10 6.7 Utilization of geographic point locations. 10 7 Representation of geographic point location 10 7.1 UML model .10 7.2 XML representation 10 7.3 Text string representation . 11 Annex A
20、 (normative) Conformance and abstract test suite 12 Annex B (informative) Latitude and longitude coordinates are not unique. 14 Annex C (normative) UML description for representation of geographic point locations. 16 Annex D (informative) Representation of latitude and longitude at the human interfa
21、ce 21 Annex E (informative) Latitude and longitude resolution 23 Annex F (informative) Utilization of Geographic Point Locations 24 Annex G (informative) Examples of XML representation. 27 Annex H (informative) Text string representation of point location . 29 Bibliography. 32 DIN EN ISO 6709:2009-1
22、0 EN ISO 6709:2009 (E) 2 Foreword The text of ISO 6709:2008, including Cor. “Geographic information/Geomatics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 6709:2009 by Technical Committee CEN/TC 287 “Geographic Information” the secretariat of which i
23、s held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2009, and conflicting national standards shall be withdrawn at the latest by December 2009. Attention is drawn to the possib
24、ility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
25、 bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swede
26、n, Switzerland and the United Kingdom. Endorsement notice The text of ISO 6709:2008, including Cor. 1:2009 has been approved by CEN as a EN ISO 6709:2009 without any modification. DIN EN ISO 6709:2009-10 EN ISO 6709:2009 (E) 3 1:2009 has been prepared by Technical Committee ISO/TC 211 Introduction E
27、fficient interchange of geographic-point-location data requires formats which are universally interpretable and which allow identification of points on, above and below the earths surface. Users in various disciplines may have different requirements. This is exemplified by the use of degrees and dec
28、imal degrees, as well as the traditional degrees, minutes and seconds, for recording latitude and longitude. Users may also require various levels of precision and may use latitude and longitude without height. The use of this International Standard will a) reduce the cost of interchange of data, b)
29、 reduce the delay in converting non-standard coding structures in preparation for interchange by providing advance knowledge of the standard interchange format, and c) provide flexible support for geographic point representation. DIN EN ISO 6709:2009-10 EN ISO 6709:2009 (E) 41 Scope This Internation
30、al Standard is applicable to the interchange of coordinates describing geographic point location. It specifies the representation of coordinates, including latitude and longitude, to be used in data interchange. It additionally specifies representation of horizontal point location using coordinate t
31、ypes other than latitude and longitude. It also specifies the representation of height and depth that may be associated with horizontal coordinates. Representation includes units of measure and coordinate order. This International Standard is not applicable to the representation of information held
32、within computer memories during processing and in their use in registers of geodetic codes and parameters. This International Standard supports point location representation through the eXtensible Markup Language (XML) and, recognizing the need for compatibility with the previous version of this Int
33、ernational Standard, ISO 6709:1983, allows for the use of a single alpha-numeric string to describe point locations. For computer data interchange of latitude and longitude, this International Standard generally suggests that decimal degrees be used. It allows the use of sexagesimal notations: degre
34、es, minutes and decimal minutes or degrees, minutes, seconds and decimal seconds. This International Standard does not require special internal procedures, file-organization techniques, storage medium, languages, etc., to be used in its implementation. 2 Conformance To conform to this International
35、Standard, representations of point locations by coordinates shall satisfy all of the conditions specified in the abstract test suite (see Annex A). 3 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition
36、 cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 8859-1, Information technology 8-bit single-byte coded graphic character sets Part 1: Latin alphabet No. 1 ISO/TS 19103, Geographic information Conceptual schema language
37、 ISO 19107, Geographic Information Spatial schema ISO 19111:2007, Geographic Information Spatial referencing by coordinates ISO 19115:2003, Geographic Information Metadata ISO 19118, Geographic information Encoding DIN EN ISO 6709:2009-10 EN ISO 6709:2009 (E) 5ISO/TS 19127, Geographic Information Ge
38、odetic codes and parameters ISO 19133, Geographic Information Location based services Tracking and navigation 4 Terms and definitions For the purposes of this document, the following terms and definitions apply. 4.1 accuracy closeness of agreement between a test result or measurement result and the
39、true value ISO 3534-2:2006 4.2 altitude height where the chosen reference surface is mean sea level 4.3 coordinate one of a sequence of n numbers designating the position of a point in n-dimensional space NOTE In a coordinate reference system, the coordinate numbers are qualified by units. ISO 19111
40、:2007 4.4 coordinate set collection of coordinate tuples related to the same coordinate reference system ISO 19111:2007 4.5 coordinate tuple tuple composed of a sequence of coordinates NOTE The number of coordinates in the coordinate tuple equals the dimension of the coordinate system; the order of
41、coordinates in the coordinate tuple is identical to the order of the axes of the coordinate system. ISO 19111:2007 4.6 depth distance of a point from a chosen reference surface measured downward along a line perpendicular to that surface NOTE A depth above the reference surface will have a negative
42、value. ISO 19111:2007 4.7 height h, H distance of a point from a chosen reference surface measured upward along a line perpendicular to that surface NOTE A height below the reference surface will have a negative value. ISO 19111:2007 DIN EN ISO 6709:2009-10 EN ISO 6709:2009 (E) 64.8 metadata data ab
43、out data ISO 19115:2003 4.9 precision measure of the repeatability of a set of measurements ISO 19116:2004 4.10 resolution coordinate unit associated with the least significant digit of a coordinate NOTE Coordinate resolution may have linear or angular units depending on the characteristics of the c
44、oordinate system. 4.11 sexagesimal degree angle represented by a sequence of values in degrees, minutes and seconds NOTE In the case of latitude or longitude, it may also include a character indicating hemisphere. EXAMPLE 50,079 572 5 degrees is represented as 500446,461“ sexagesimal degrees. 4.12 t
45、uple ordered list of values ISO 19136:2007 5 Abbreviated terms CRS Coordinate Reference System GPL Geographic Point Location GML Geography Markup Language UML Unified Modelling Language XML eXtensible Mark-up Language 6 Requirements for the representation of geographic point location 6.1 Conceptual
46、model for geographic point locations A coordinate is one of a sequence of numbers describing the position of a point. A coordinate tuple is composed of a sequence of coordinates describing one position. EXAMPLE A coordinate tuple consisting of latitude, longitude and height represents a 3-dimensiona
47、l geographic position. DIN EN ISO 6709:2009-10 EN ISO 6709:2009 (E) 7A coordinate tuple represents a location unambiguously only if the coordinate reference system (CRS) to which it is referenced is identified. Without this identification, uncertainty in position may result in the location being as
48、much as several hundred metres distant, see Annex B. ISO 19111 defines the elements required to describe a coordinate reference system. A coordinate set is a collection of coordinate tuples. ISO 19111 requires that all coordinate tuples within a coordinate set should be referenced to the same coordi
49、nate reference system. If only one point is being described, the association between the coordinate tuple and coordinate reference system may be direct. For a coordinate set, one CRS identification or definition is associated with the coordinate set and all coordinate tuples in that coordinate inherit that association. The conceptual relationship between the coordinate tuple, Annex C. Figure 1 Conceptual relationship of coordinates to a Coordinate Reference System (CRS) Coordinates within a 2-dimensional CRS desc
