1、 INTERNATIONAL STANDARD IEC 61108-4First edition 2004-07Maritime navigation and radiocommunication equipment and systems Global navigation satellite systems (GNSS) Part 4: Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements, methods of testing and required t
2、est results Reference number IEC 61108-4:2004(E) Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its
3、publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kep
4、t under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the s
5、ubjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is also available from the following: IEC Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web s
6、ite (http:/www.iec.ch/searchpub/cur_fut.htm) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also available on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Ju
7、st Published This summary of recently issued publications (http:/www.iec.ch/online_news/ justpub/jp_entry.htm) is also available by email. Please contact the Customer Service Centre (see below) for further information. Customer Service Centre If you have any questions regarding this publication or n
8、eed further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 INTERNATIONAL STANDARD IEC 61108-4First edition 2004-07Maritime navigation and radiocommunication equipment and systems Global navigation satellite systems (GNSS) Par
9、t 4: Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements, methods of testing and required test results IEC 2004 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, i
10、ncluding photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch W For price, see c
11、urrent catalogue PRICE CODE Commission Electrotechnique Internationale International Electrotechnical Commission 2 61108-4 IEC:2004(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms, definitions and abbreviations 7 3.1 Definitions.7 3.2 Abbreviations 7 4 Performance requirements .7
12、4.1 Introduction .7 4.2 Composition 8 4.3 Functional requirements 8 4.4 Protection9 4.5 Integrity.9 4.6 Interfaces 10 4.7 IEC 61162-1, IEC 61162-2 implementation10 4.8 IEC 61162-3 implementation .10 4.9 Display and control10 4.10 Installation 10 5 Technical characteristics 11 5.1 Carrier frequency 1
13、1 5.2 Frequency tolerance11 5.3 Message types 11 5.4 Data transmission rate 11 5.5 Dynamic range 11 5.6 Maximum bit error ratio .11 5.7 Receiver selectivity and stability11 5.8 Automatic frequency selection.12 5.9 Protection ratios 12 6 Methods of testing and required test results .13 6.1 General co
14、nditions of measurement and test signals.13 6.2 Operational tests.14 6.3 Protection of external connections.18 6.4 Integrity.18 6.5 Technical tests 18 6.6 Additional functionality tests20 Annex A (normative) Simulation of noise situations for the test of shipborne DGPS maritime radio beacon receiver
15、 equipment21 A.1 Parameters describing noise 21 A.2 Noise models .22 A.3 Test procedures .26 Annex B (informative) Methodology for measuring WER .27 B.1 Recording the RTCM data stream.27 B.2 Analysing the RTCM data stream .27 B.3 Caution 27 61108-4 IEC:2004(E) 3 Annex C (normative) Tests that are sp
16、ecific to integrated equipment that does not provide an output port for testing.30 C.1 General requirements.30 C.2 Test of WER display.30 C.3 Comments to Clause 6, methods of testing.30 Annex D (informative) Installation guidelines to counteract the effect of interference .31 D.1 Introduction 31 D.2
17、 Antennas31 D.3 General installation requirements .32 D.4 Noise/interference sources .34 D.5 Testing .34 D.6 Troubleshooting35 Annex E (informative) Implementation using a concurrent process.36 Annex F (informative) Data interface guidance.38 Bibliography39 Figure A.1 Generating atmospherics accordi
18、ng to Feldman24 Figure A.2 Test set-up using a PC to program a waveform synthesizer 26 Figure B.1 Word error rate algorithm (first part) .28 Figure B.2 Word error rate algorithm (second part) 29 Figure E.1 Station status update36 Figure E.2 Navigation process .37 Table 1 Message types (M823/1.2) 11
19、Table 2 Protection ratios12 Table A.1 Parameters for different interference situations23 Table A.2 Characteristic parameters of the simulated situations.25 Table D.1 Troubleshooting conditions 35 4 61108-4 IEC:2004(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MARITIME NAVIGATION AND RADIOCOMMUNICA
20、TION EQUIPMENT AND SYSTEMS GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) Part 4: Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements, methods of testing and required test results FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide org
21、anization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities
22、, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt
23、 with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined
24、by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.
25、3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they a
26、re used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and
27、the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they h
28、ave the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature what
29、soever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced public
30、ations is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Stan
31、dard IEC 61108-4 has been prepared by IEC technical committee 80: Maritime navigation and radiocommunication equipment and systems. The text of this standard is based on the following documents: FDIS Report on voting 80/394/FDIS 80/398/RVD Full information on the voting for the approval of this stan
32、dard can be found in the report on voting indicated in the above table. 61108-4 IEC:2004(E) 5 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date i
33、ndicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. IEC 61108 consists of the following parts, under the general title Maritime navigation
34、and radiocommunication equipment and systems Global navigation satellite systems (GNSS): Part 1: Global positioning system (GPS) Receiver equipment Performance standards, methods of testing and required test results Part 2: Global navigation satellite system (GLONASS) Receiver equipment Performance
35、standards, methods of testing and required test results Part 3: (To be used at a later date) A bilingual version of this publication may be issued at a later date. 6 61108-4 IEC:2004(E) MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS GLOBAL NAVIGATION SATELLITE SYSTEMS (GNSS) Part 4
36、: Shipborne DGPS and DGLONASS maritime radio beacon receiver equipment Performance requirements, methods of testing and required test results 1 Scope This part of IEC 61108 specifies the minimum operational and performance requirements, methods of testing and required test results conforming to perf
37、ormance standards not inferior to those adopted by the IMO in resolution MSC.114(73). In addition, it takes account of IMO resolution A.694(17) and is associated with IEC 60945. When a requirement of this standard is different from IEC 60945, the requirement in this standard shall take precedence. T
38、his standard may be satisfied by equipment integral with GNSS equipment. This standard is applicable to HSC. All text of this standard, whose wording is identical to that in IMO resolution MSC.114(73) and ITU-R M.823 is printed in italics and the resolution (abbreviated to 114 and M.823 respectively
39、 ) and paragraph numbers are indicated in brackets i.e. (114/3.3 or M.823/3.3 ). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the r
40、eferenced document (including any amendments) applies. IEC 60945, Maritime navigation and radiocommunication equipment and systems General requirements Methods of testing and required test results IEC 61162-1, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 1
41、: Single talker and multiple listeners IEC 61162-2, Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 2: Single talker and multiple listeners, high speed transmission IMO Resolution MSC.114(73), Revised recommendation on performance standards for shipborne DGPS
42、 and DGLONASS maritime radio beacon receiver equipment IMO Resolution A.694(17), General requirements for shipborne radio equipment forming part of the Global Maritime Distress and Safety System (GMDSS) and for electronic navigational aids ITU-R M.823-2, Technical characteristics of differential tra
43、nsmissions for Global Navigation Satellite Systems (GNSS) from maritime radio beacons in the frequency band 283,5 315 kHz in Region 1 and 285 325 kHz in Regions 2 and 3 61108-4 IEC:2004(E) 7 3 Terms, definitions and abbreviations For the purposes of this standard the following definitions and abbrev
44、iations apply. 3.1 Definitions 3.1.1 Eurofix the Eurofix datalink is a scheme for modulation of the Loran-C and Chayka signals to establish a broadcast capability that can be used for distribution of GNSS corrections, integrity data and other information. Similar developments in the US are referred
45、to as LORAN-COMM 3.1.2 global navigation satellite system (GNSS) is a world-wide position, time and velocity radio determination system comprising space, ground and user segments 3.1.3 integrity is the ability to provide users with warnings within a specified time when the system should not be used
46、for navigation 3.2 Abbreviations BER Bit error rate bps Bits per second DGLONASS Differential GLONASS DGNSS Differential GNSS DGPS Differential GPS EGNOS European Geo-stationary Navigational Overlay System EPFS Electronic position fixing system EUT Equipment under test MSAS Multi-Satellite Augmentat
47、ion System MSK Minimum shift keying RTK Real-Time Kinematics SNR Signal to noise ratio UDRE User defined range error VTS Vessel Tracking Services WAAS Wide-Area Augmentation System WER Word error rate 4 Performance requirements 4.1 Introduction Differential services broadcast information for augment
48、ing Global Positioning System (GPS) and the Global Navigation Satellite System (GLONASS) to provide the accuracy and integrity required for entrances and harbour approaches and other waters in which the freedom to manoeuvre is limited. Various service providers are broadcasting differential informat
49、ion applicable to localised areas. Different services provide information for augmenting GPS, GLONASS, or both.(114/1.1) 8 61108-4 IEC:2004(E) Receiver equipment for the reception and proper de-modulating / decoding of differential GPS and GLONASS maritime radio beacon broadcasts (fully compliant with ITU-R M.823) intended for navigational purposes on ships with maximum speeds not exceeding 7
