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 61 1 08 specifies the minimum performance standards, methods of testing and required test results for GPS shipborne receiver equipment, based on IMO Resolution MSC.1 1 2(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(1 3). All text of this standard, whose meaning is identical to that in IMO Resolution MSC.1 1 2(73), is printed in italics and the Resolution and paragraph number indicated between brackets i.e. (M.1 1 2/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 -3-6:1 987, 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 61 1 62 (all parts), Maritime navigation and radiocommunication equipment and systems – Digital interfaces IMO Resolution A.529(1 3):1 983, Accuracy standards for navigation IMO Resolution A.694(1 7):1 991 , 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.81 5(1 9):1 995, Worldwide radionavigation system IMO Resolution MSC.1 1 2(73):2000, Performance standards for shipborne global positioning system (GPS)
IMO Resolution MSC.1 1 4(73):2000, Performance standards for shipborne DGPS and DGLONASS maritime radio beacon receiver equipment ITU-R Recommendation M.823-1 :1 995, 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.823-2:1 997, 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.1 477:2000, 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 3.2 Abbreviations COG – Course Over Ground DGPS – Differential Global Positioning System GPS – Global Positioning System HDOP – Horizontal Dilution Of Precision PDOP – Position Dilution Of Precision RAIM – Receiver Autonomous Integrity Monitor SDME – Speed and Distance Measuring Equipment SOG – Speed Over Ground SPS – Standard Positioning Service USNO – United States Naval Observatory UTC – Universal Time Coordinated
4.2.3 Quality assurance The equipment shall be designed produced and documented by companies complying with approved quality systems as applicable. 4.3 Performance standards for GPS receiver equipment 4.3.1 General (See 5.6.2) (M.1 1 2/A3.1 ) The GPS receiver equipment shall be capable of receiving and processing the Standard Positioning Service (SPS) and provide position information in latitude and longitude World Geodetic System (WGS-84) co-ordinates in degrees, minutes and thousandths of minutes and time of solution referenced to UTC (USNO). Means may be provided to transform the computed position based upon WGS-84 into data compatible with the datum of the navigational chart in use. Where this facility exists, the display shall indicate that co-ordinate conversion is being performed and shall identify the co-ordinate system in which the position is expressed. (M.1 1 2/A3.2) The GPS receiver equipment shall operate on the L1 signal and C/A code. 4.3.2 Equipment output (See 5.6.3) (M.1 1 2/A3.3) The GPS receiver equipment shall be provided with at least one output from which position information can be supplied to other equipment. The output of position information based upon WGS-84 shall be in accordance with International Standards – IEC 61 1 62. The position information output shall be in accordance with IEC 61 1 62 as follows: For positioning reporting purposes the following sentences shall be available in any combination.