IEC 61993-2 Maritime navigation and radiocommunication equipment and systems. Automatic identification systems (AIS). Part 2. Class A shipborne equipment of the universal automatic identification system (AIS). Operational and performance requirements, methods of test and required test results

Документ на английском языке
IEC 61993-2. Maritime navigation and radiocommunication equipment and systems. Automatic identification systems (AIS). Part 2. Class A shipborne equipment of the universal automatic identification system (AIS). Operational and performance requirements, methods of test and required test results.
Following the adoption by the International Maritime Organisation (IMO) of Resolution MSC.74(69) Annex 3, Performance Standard for a Universal Shipborne Automatic Identification System, TC 80 established Working Group 8A to develop IEC 61993-2. Technical requirements were provided in ITU-R M.1371 "Technical characteristics for a universal shipborne Automatic Identification System (AIS) using TDMA (Self-Organising Time Division Multiple Access) in the VHF maritime mobile band". Carriage requirements for SOLAS ships have been adopted by IMO for entry into force starting on July 1st 2002.
The IMO Resolution MSC.74(69) Annex 3, Performance Standard for an Universal Shipborne Automatic Identification System, requires that the AIS has a means of processing data from an electronic position fixing system that provides a resolution of one ten-thousandth of a minute of arc and uses the WGS 84 datum. Resolution A.815(19) requires an accuracy of position information better than 10 m in confined waters. This does not require but implies that if the ship is not equipped with a DGNSS, the GNSS sensor internal to the AIS should be a DGNSS and should be used as source of position information.
Moreover, Resolution MSC.74(69) Annex 3 does not include any requirement for backup arrangements of the position information. However, a GNSS sensor is included in the AIS equipment as the source of UTC. It is felt by IEC TC 80 that this GNSS sensor also can be used as a back-up arrangement for the position information obtained from the ships DGNSS. This would ensure the availability of the AIS system in case of failure of the ship’s EPFS.
Therefore, IEC TC 80 strongly recommends that manufacturers of AIS equipment implement such an arrangement in accordance with table 4 of this International Standard.

Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Abbreviations
4 General requirements
5 Environmental, power supply, special purpose and safety requirements
6 Performance requirements
7 Technical requirements
8 DSC compatibility
9 Long range applications
10 Test conditions
11 Power supply, special purpose and safety tests
12 Environmental tests
13 E M C tests
14 Operational tests
15 Physical Tests
16 Specific tests of Link Layer
17 Specific tests of Network Layer
18 Specific tests of Transport Layer
19 Specific Presentation Interface Tests
20 DSC functionality tests
21 Long Range functionality tests
Annex A (informative) Block diagram of AIS
Annex B (informative) New IEC 61162-1 sentences due to AIS
Annex C (informative) Long range application
Annex D (normative) AIS Interface Overview
Annex E (informative) Block diagram of AIS test system
Bibliography