IEC 62320-3:2015

Maritime navigation and radiocommunication equipment and systems - Automatic identification systems (AIS) - Part 3: Repeater stations - Minimum operational and performance requirements - Methods of test and required test results

IEC 62320-3:2015 specifies the minimum operational and performance requirements, methods of testing and required test results for AIS repeater stations, compatible with the performance standards adopted by IMO Res. MSC.74 (69), annex 3, Universal AIS. It incorporates the technical characteristics of non-shipborne, fixed station AIS equipment, included in Recommendation ITU-R M.1371 and IALA Recommendation A-124. Where applicable, it also takes into account the ITU Radio Regulations. This standard takes into account other associated IEC International Standards and existing national standards, as applicable. This standard is applicable for AIS repeater stations. It does not include specifications for the display of AIS data on shore.

Matériels et systèmes de navigation et de radiocommunication maritimes - Systèmes d'identification automatique (SIA) - Partie 3: Station de répéteurs - Exigences minimales d'exploitation et de performances - Méthodes d’essai et résultats d’essai exigibles

L'IEC 62320-3:2015 spécifie les exigences minimales d'exploitation et de performances, les méthodes d'essai et les résultats exigibles pour les stations de répéteurs SIA conformes aux normes de performances adoptées par l'Annexe 3 de la Résolution MSC.74 (69) de l'OMI, SIA universel. Elle intègre les caractéristiques techniques des systèmes SIA de station fixe non embarquée, incluses dans la Recommandation UIT-R M.1371 et la Recommandation IALA A-124. Le cas échéant, elle tient compte également des réglementations de radiodiffusion de l'UIT. La présente norme s'appuie sur d'autres Normes internationales de l'IEC associées et sur des normes nationales existantes, selon le cas.
La présente norme s'applique aux stations de répéteurs SIA. Elle n'inclut pas les spécifications pour l'affichage des données SIA à terre.

General Information

• Status: Published
• Publication Date: 27-Jan-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
• Drafting Committee: WG 15 - TC 80/WG 15
• Current Stage: PPUB - Publication issued
• Start Date: 28-Feb-2015
• Completion Date: 28-Jan-2015

Standards Content (Sample)

IEC 62320-3 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Automatic identification system (AIS) –
Part 3: Repeater stations – Minimum operational and performance
requirements – Methods of test and required test results

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
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Switzerland www.iec.ch
About the IEC
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International Standards for all electrical, electronic and related technologies.

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IEC 62320-3 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Automatic identification system (AIS) –

Part 3: Repeater stations – Minimum operational and performance

requirements – Methods of test and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-2237-9

– 2 – IEC 62320-3:2015  IEC 2015
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Symbols and abbreviations . 10
4 Functional requirements for a repeater station . 11
4.1 General . 11
4.1.1 Types of repeater stations . 11
4.1.2 Repeating operation . 11
4.1.3 Synchronisation . 12
4.1.4 Access to the VDL . 12
4.1.5 Configuration . 13
4.2 Functional block diagram of an AIS repeater station . 13
4.3 Repeating rules. 14
4.3.1 General repeating rules . 14
4.3.2 Repeater station use of repeat indicator . 15
4.3.3 Duplicate message filtering . 15
4.3.4 Content filtering . 16
4.3.5 Reporting interval filtering . 19
4.3.6 Channel filtering . 19
4.3.7 Filtering procedure . 19
4.3.8 Message processing . 21
4.3.9 Overload protection . 21
4.3.10 Slot selection using RSSI – RSSI measurement . 22
4.4 Message scheduling . 22
4.4.1 Station report . 22
4.4.2 Repeater station identification message structure . 23
4.4.3 Broadcast active AIS-SART message . 24
4.4.4 Configuration parameters . 24
4.5 Repeater station input/output sentence formatters . 29
5 Performance requirements. 30
5.1 Cyclic redundancy check. 30
5.2 Physical layer requirement . 30
5.2.1 Transmitter requirements . 30
5.2.2 Receiver requirements . 34
5.2.3 Power consumption . 34
5.2.4 Environmental requirements . 35
5.3 Link layer requirements . 35
6 Functional tests . 35
6.1 Configuration tests . 35
6.1.1 Factory default settings . 35
6.1.2 Standard test set-up . 36
6.1.3 Configuration via VDL . 37
6.2 Basic functional tests . 38
6.2.1 Basic repetition test . 38
6.2.2 Power setting . 38

6.2.3 Repeat indicator handling . 39
6.2.4 Synchronisation jitter . 40
6.3 VDL access. 41
6.3.1 RATDMA . 41
6.3.2 FATDMA access . 44
6.3.3 ITDMA access . 44
6.4 Repetition rates . 45
6.4.1 Downsampling . 45
6.4.2 Fixed repetition interval . 46
6.4.3 Maximum VDL load . 46
6.4.4 Maximum transmissions per second . 47
6.4.5 Age of time stamp . 47
6.5 Filtering . 48
6.5.1 Duplicate filtering . 48
6.5.2 Channel filtering . 48
6.5.3 Position filtering . 49
6.5.4 Message type filtering . 51
6.5.5 Message content filtering . 51
6.5.6 AIS-SART filtering . 56
6.6 Repeater station identification message . 56
6.6.1 Purpose . 56
6.6.2 Method of measurement . 56
6.6.3 Required results . 57
7 Test conditions . 57
7.1 Normal and extreme test conditions . 57
7.1.1 Normal test conditions . 57
7.1.2 Extreme test conditions . 57
7.2 Additional test arrangements. 57
7.2.1 Arrangements for test signals applied to the receiver input . 57
7.2.2 Encoder for receiver measurements . 58
7.2.3 Waiver for receivers . 58
7.2.4 Impedance . 58
7.2.5 Artificial antenna (dummy load) . 58
7.2.6 Facilities for access . 58
7.2.7 Modes of operation of the transmitter. 58
7.3 Measurement uncertainties . 58
7.4 Test signals . 59
7.4.1 Standard test signal number 1 . 59
7.4.2 Standard test signal number 2 . 59
7.4.3 Standard test signal number 3 . 59
7.4.4 Standard test signal number 4 . 59
8 Physical radio tests . 60
8.1 Transceiver protection test . 60
8.1.1 Purpose . 60
8.1.2 Method of measurement . 60
8.1.3 Required results .
...

IEC 62320-3 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Automatic identification system (AIS) –
Part 3: Repeater stations – Minimum operational and performance
requirements – Methods of test and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –
Systèmes d'identification automatique (SIA) –
Partie 3: Stations de répéteurs – Exigences minimales d'exploitation et de
performances – Méthodes d’essai et résultats d’essai exigés

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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and withdrawn publications. Also known as the International Electrotechnical Vocabulary

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IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
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IEC 62320-3 ®
Edition 1.0 2015-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Automatic identification system (AIS) –

Part 3: Repeater stations – Minimum operational and performance

requirements – Methods of test and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –

Systèmes d'identification automatique (SIA) –

Partie 3: Stations de répéteurs – Exigences minimales d'exploitation et de

performances – Méthodes d’essai et résultats d’essai exigés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-8083-6

– 2 – IEC 62320-3:2015  IEC 2015
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Symbols and abbreviations . 10
4 Functional requirements for a repeater station . 11
4.1 General . 11
4.1.1 Types of repeater stations . 11
4.1.2 Repeating operation . 11
4.1.3 Synchronisation . 12
4.1.4 Access to the VDL . 12
4.1.5 Configuration . 13
4.2 Functional block diagram of an AIS repeater station . 13
4.3 Repeating rules. 14
4.3.1 General repeating rules . 14
4.3.2 Repeater station use of repeat indicator . 15
4.3.3 Duplicate message filtering . 15
4.3.4 Content filtering . 16
4.3.5 Reporting interval filtering . 19
4.3.6 Channel filtering . 19
4.3.7 Filtering procedure . 19
4.3.8 Message processing . 21
4.3.9 Overload protection . 21
4.3.10 Slot selection using RSSI – RSSI measurement . 22
4.4 Message scheduling . 22
4.4.1 Station report . 22
4.4.2 Repeater station identification message structure . 23
4.4.3 Broadcast active AIS-SART message . 24
4.4.4 Configuration parameters . 24
4.5 Repeater station input/output sentence formatters . 29
5 Performance requirements. 30
5.1 Cyclic redundancy check. 30
5.2 Physical layer requirement . 30
5.2.1 Transmitter requirements . 30
5.2.2 Receiver requirements . 34
5.2.3 Power consumption . 34
5.2.4 Environmental requirements . 35
5.3 Link layer requirements . 35
6 Functional tests . 35
6.1 Configuration tests . 35
6.1.1 Factory default settings . 35
6.1.2 Standard test set-up . 36
6.1.3 Configuration via VDL . 37
6.2 Basic functional tests . 38
6.2.1 Basic repetition test . 38
6.2.2 Power setting . 38

6.2.3 Repeat indicator handling . 39
6.2.4 Synchronisation jitter . 40
6.3 VDL access. 41
6.3.1 RATDMA . 41
6.3.2 FATDMA access . 44
6.3.3 ITDMA access . 44
6.4 Repetition rates . 45
6.4.1 Downsampling . 45
6.4.2 Fixed repetition interval . 46
6.4.3 Maximum VDL load . 46
6.4.4 Maximum transmissions per second . 47
6.4.5 Age of time stamp . 47
6.5 Filtering . 48
6.5.1 Duplicate filtering . 48
6.5.2 Channel filtering . 48
6.5.3 Position filtering . 49
6.5.4 Message type filtering . 51
6.5.5 Message content filtering . 51
6.5.6 AIS-SART filtering . 56
6.6 Repeater station identification message . 56
6.6.1 Purpose . 56
6.6.2 Method of measurement .
...