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BS EN 62320-3:2015

BS EN 62320-3:2015

$215.11

Maritime navigation and radiocommunication equipment and systems. Automatic identification systems (AIS) – Repeater stations. Minimum operational and performance requirements. Methods of test and required test results

Published By Publication Date Number of Pages
BSI 2015 108
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IEC 62320-3:2015(E) 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.

PDF Catalog

PDF Pages PDF Title
6 CONTENTS
10 INTRODUCTION
11 1 Scope
2 Normative references
12 3 Symbols and abbreviations
13 4 Functional requirements for a repeater station
4.1 General
4.1.1 Types of repeater stations
4.1.2 Repeating operation
14 4.1.3 Synchronisation
4.1.4 Access to the VDL
Tables
Table 1 โ€“ SOTDMA communication state of received station
15 4.1.5 Configuration
4.2 Functional block diagram of an AIS repeater station
Table 2 โ€“ ITDMA Communication state of received station
Table 3 โ€“ ITDMA communication state of received station with rescheduling
16 4.3 Repeating rules
4.3.1 General repeating rules
Figures
Figure 1 โ€“ Functional block diagram of an AIS repeater station
17 4.3.2 Repeater station use of repeat indicator
4.3.3 Duplicate message filtering
18 4.3.4 Content filtering
Table 4 โ€“ Duplicate message filtering parameters
19 Table 5 โ€“ Repeater station behaviour for message repeat
21 4.3.5 Reporting interval filtering
4.3.6 Channel filtering
4.3.7 Filtering procedure
23 4.3.8 Message processing
4.3.9 Overload protection
24 4.3.10 Slot selection using RSSI โ€“ RSSI measurement
4.4 Message scheduling
4.4.1 Station report
25 4.4.2 Repeater station identification message structure
Table 6 โ€“ Contents of Message 26 used for repeater station identification
26 4.4.3 Broadcast active AIS-SART message
4.4.4 Configuration parameters
Table 7 โ€“ Alarm status definition for Table 6
Table 8 โ€“ Message 8 structure with AIS-SART related content
27 Table 9 โ€“ Configurable parameters
28 Table 10 โ€“ Repetition parameters
30 Table 11 โ€“ Area related configuration parameters
31 4.5 Repeater station input/output sentence formatters
32 5 Performance requirements
5.1 Cyclic redundancy check
5.2 Physical layer requirement
5.2.1 Transmitter requirements
Table 12 โ€“ Repeater station input/output sentence formatters
33 Table 13 โ€“ Transmitter parameters
34 Figure 2 โ€“ Power versus time characteristics
Table 14 โ€“ Power versus time characteristics for Figure 2
35 Table 15 โ€“ Required parameter settings for a repeater station
Table 16 โ€“ Required settings of physical layer constants
Table 17 โ€“ Modulation parameters of the physical layer of the repeater station
36 5.2.2 Receiver requirements
5.2.3 Power consumption
Table 18 โ€“ Required receiver characteristics
37 5.2.4 Environmental requirements
5.3 Link layer requirements
6 Functional tests
6.1 Configuration tests
6.1.1 Factory default settings
Table 19 โ€“ Factory default values
38 6.1.2 Standard test set-up
Table 20 โ€“ Standard test set-up
39 6.1.3 Configuration via VDL
Table 21 โ€“ Test area of standard test set-up
40 6.2 Basic functional tests
6.2.1 Basic repetition test
6.2.2 Power setting
41 6.2.3 Repeat indicator handling
42 6.2.4 Synchronisation jitter
43 6.3 VDL access
6.3.1 RATDMA
46 6.3.2 FATDMA access
6.3.3 ITDMA access
47 6.4 Repetition rates
6.4.1 Downsampling
48 6.4.2 Fixed repetition interval
6.4.3 Maximum VDL load
49 6.4.4 Maximum transmissions per second
6.4.5 Age of time stamp
50 6.5 Filtering
6.5.1 Duplicate filtering
6.5.2 Channel filtering
51 6.5.3 Position filtering
53 6.5.4 Message type filtering
6.5.5 Message content filtering
58 6.5.6 AIS-SART filtering
6.6 Repeater station identification message
6.6.1 Purpose
6.6.2 Method of measurement
59 6.6.3 Required results
7 Test conditions
7.1 Normal and extreme test conditions
7.1.1 Normal test conditions
7.1.2 Extreme test conditions
7.2 Additional test arrangements
7.2.1 Arrangements for test signals applied to the receiver input
60 7.2.2 Encoder for receiver measurements
7.2.3 Waiver for receivers
7.2.4 Impedance
7.2.5 Artificial antenna (dummy load)
7.2.6 Facilities for access
7.2.7 Modes of operation of the transmitter
7.3 Measurement uncertainties
61 7.4 Test signals
7.4.1 Standard test signal number 1
7.4.2 Standard test signal number 2
7.4.3 Standard test signal number 3
7.4.4 Standard test signal number 4
62 8 Physical radio tests
8.1 Transceiver protection test
8.1.1 Purpose
8.1.2 Method of measurement
Figure 3 โ€“ Format for repeating four-packet cluster
Table 22 โ€“ Content of first two packets
Table 23 โ€“ Fixed PRS data derived from Recommendation ITU-T O.153
63 8.1.3 Required results
8.2 TDMA transmitter
8.2.1 General
8.2.2 Frequency error
8.2.3 Carrier power
Figure 4 โ€“ Measurement arrangement
64 8.2.4 Modulation spectrum slotted transmission
Figure 5 โ€“ Measurement arrangement
65 8.2.5 Transmitter test sequence and modulation accuracy verification
Figure 6 โ€“ Modulation spectrum for slotted transmission
Figure 7 โ€“ Measurement arrangement
66 8.2.6 Transmitter output power versus time function
67 Figure 8 โ€“ Power versus time characteristics
Table 24 โ€“ Power versus time characteristics
68 8.2.7 Intermodulation attenuation (Type 1 only)
Figure 9 โ€“ Measurement arrangement
69 8.3 TDMA receivers
8.3.1 Sensitivity
Figure 10 โ€“ Measurement arrangement
70 8.3.2 Error behaviour at high input levels
8.3.3 Co-channel rejection
Figure 11 โ€“ Measurement arrangement
Figure 12 โ€“ Measurement arrangement
71 8.3.4 Adjacent channel selectivity
Figure 13 โ€“ Measurement arrangement
72 8.3.5 Spurious response rejection
73 Figure 14 โ€“ SINAD or PER/BER measuring equipment
74 8.3.6 Intermodulation response rejection
Figure 15 โ€“ Measurement arrangement
75 8.3.7 Blocking or desensitisation
Figure 16 โ€“ Measurement arrangement
Table 25 โ€“ Frequencies for intermodulation tests
76 8.3.8 Conducted spurious emissions at the antenna
77 Annex A (normative) Configuration structures
A.1 General
78 Table A.1 โ€“ Basic system parameters
79 A.2 PI sentences for repeater stations
A.2.1 RFS โ€“ Repeater station FATDMA slots
Table A.2 โ€“ General repetition parameters
81 A.2.2 RMF โ€“ Repeater station MMSI filter
A.2.3 Area configuration
85 A.3 Configuration via VDL using Message 26
86 Table A.3 โ€“ Basic structure of Message 26
Table A.4 โ€“ Message 26 repeater command IDs
87 Table A.5 โ€“ EPV configuration
88 Table A.6 โ€“ EPV query
89 Table A.7 โ€“ Property identifiers for use with EPV โ€“ Basic system parameters
90 Table A.8 โ€“ Property identifiers for use with EPV โ€“ General repetition parameters
91 Table A.9 โ€“ AES key configuration
92 Table A.10 โ€“ RFS configuration
93 Table A.11 โ€“ RFS query
94 Table A.12 โ€“ RMF configuration
95 Table A.13 โ€“ RMF query
96 Table A.14 โ€“ RA1 configuration
97 Table A.15 โ€“ RA1 query
98 Table A.16 โ€“ RA2 configuration
100 Table A.17 โ€“ RA2 query
101 Table A.18 โ€“ RA3 configuration
102 Table A.19 โ€“ RA3 query
103 Table A.20 โ€“ RA4 configuration
104 Table A.21 โ€“ RA4 query
105 Annex B (informative) Test area arrangement
Figure B.1 โ€“ Test area arrangement
106 Bibliography
BS EN 62320-3:2015
$215.11