IEC 61108-1:2003 pdf – Maritime navigation 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.
1 Scope This part of IEC 61108 specifies the minimum performance standards, methods of testing and required test results for GPS shipborne receiver equipment, based on IMO Resolution MSC.112(73), which uses the signals from the United States of America, Department of Defence (US DOD), Global Positioning System (GPS) in order to determine position. A description of the GPS SPS is given in the normative reference – GPS, SPS signal specifi- cation – USA Department of Defence – 3rd Edition October 2001. This receiver standard applies to phases of the voyage “other waters” as defined in IMO Resolution A.529(13). All text of this standard, whose meaning is identical to that in IMO Resolution MSC.112(73), is printed in italics and the Resolution and paragraph number indicated between brackets i.e. (M.112/A1.2). The requirements in clause 4 are cross-referenced to the tests in clause 5 and vice versa. 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 referenced document (including any amendments) applies. IEC 60721-3-6:1987, Classification of environmental conditions – Part 3: Classification of groups of environmental parameters and their severities – Ship environment IEC 60945, Maritime navigation and radiocommunication equipment and systems – General requirements – Methods of testing and required test results IEC 61162 (all parts), Maritime navigation and radiocommunication equipment and systems – Digital interfaces IMO Resolution A.529(13):1983, Accuracy standards for navigation IMO Resolution A.694(17):1991, General requirements for shipborne radio equipment forming part of the Global maritime distress and safety system (GMDSS) and for electronic navigational aids IMO Resolution A.815(19):1995, Worldwide radionavigation system IMO Resolution MSC.112(73):2000, Performance standards for shipborne global positioning system (GPS) receiver equipment
IMO Resolution MSC.114(73):2000, Performance standards for shipborne DGPS and DGLONASS maritime radio beacon receiver equipment ITU-R Recommendation M.823-1:1995, Technical characteristics of differential transmissions for global navigation satellite systems (GNSS) from maritime radio beacons in the frequency band 285 kHz-325 kHz (283,5 kHz-315 kHz in Region 1) ITU-R Recommendation M.823-2:1997, Technical characteristics of differential transmissions for Global Navigation Satellite Systems from maritime radio beacons in the frequency band 283.5-315 kHz in Region 1 and 285-325 kHz in Regions 2 and 3 ITU-R Recommendation M.1477:2000, Technical and performance characteristics of current and planned radionavigation-satellite service (space-to-Earth) and aeronautical radio- navigation service receivers to be considered in interference studies in the band 1 559- 1 610 MHz Global Positioning System – Standard Positioning Service – Performance Specification – USA Department of Defence – 3rd Edition October 2001 3 Terms, definitions and abbreviations For the purposes of this document, all definitions and abbreviations used are the same as those used in the normative reference of the GPS SPS performance signal specification. 3.1 Definitions 3.1.1 integrity ability of the system to provide users with warnings within a specified time when the system should not be used for navigation
4 Minimum performance standards 4.1 Object (M.112/A1.2) Receiver equipment for the Global Positioning System (GPS) system intended for navigational purposes on ships with maximum speeds not exceeding 70 knots shall, in addition to the general requirements contained in resolution A.694(17) 1 , comply with the following minimum performance requirements. (M.112/A1.3) This standard covers the basic requirements of position fixing for navigation purposes only and does not cover other computational facilities which may be provided in the equipment. This standard contains the basic minimum performance standards for use of GPS Standard Positioning Service (SPS) signals for navigational position fixing, including differential corrections, and, in addition, for the determination of speed and direction of the movement of the antenna over the ground. Other computational activity, input/output activity or extra display functions which may be provided shall not degrade the performance of the equipment below the minimum performance standards set out in this standard. The GPS receiver equipment shall comply with – the provisions of IMO Resolutions A.529(13), A.815(19), MSC.112(73) and A.694(17), – the accuracy requirements of the GPS SPS Performance Standard, – IEC 61162-1, IEC 61162-2, as appropriate, on digital interfaces, and – shall be tested in accordance with IEC 60945.