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BS IEC 62287-1:2017+A1:2022:2023 Edition

BS IEC 62287-1:2017+A1:2022:2023 Edition

$215.11

Maritime navigation and radiocommunication equipment and systems. Class B shipborne equipment of the automatic identification system (AIS) – Carrier-sense time division multiple access (CSTDMA) techniques

Published By Publication Date Number of Pages
BSI 2023 100
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PDF Catalog

PDF Pages PDF Title
2 undefined
3 Final version
4 CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
2 Normative references
14 3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
15 4 General requirements
4.1 General
4.1.1 Capabilities of the Class B “CS” AIS
4.1.2 Quality assurance
16 4.1.3 Safety of operation
4.1.4 Additional features
4.1.5 Modes of operation
17 4.2 Manuals
4.3 Marking and identification
5 Environmental, power supply, interference and safety requirements
18 6 Performance requirements
6.1 Composition
6.2 Operating frequency channels
6.3 GNSS receiver for position reporting
19 6.4 Identification
6.5 AIS information
6.5.1 Information content
20 6.5.2 Information reporting intervals
6.5.3 Permissible initialisation period
6.6 Alarms and indications, fall-back arrangements
6.6.1 Integrity and protection
21 6.6.2 Transmitter shutdown procedure
6.6.3 Position sensor fallback conditions
Tables
Table 1 ā€“ Position sensor fallback conditions
22 6.6.4 SOG/COG sensor fallback conditions
6.7 User interface
6.7.1 Indicators and display
6.7.2 Static data input
6.7.3 External interfaces
Table 2 ā€“ Use of accuracy (PA) flag
23 6.8 Protection from invalid control commands
7 Technical requirements
7.1 General
24 7.2 Physical layer
7.2.1 General
7.2.2 Transceiver characteristics
Figures
Figure 1 ā€“ OSI layer model
25 Table 3 ā€“ Transceiver characteristics
26 7.2.3 Transmitter requirements
7.2.4 Receiver requirements
Table 4 ā€“ Transmitter parameters
27 7.3 Link layer
7.3.1 General
7.3.2 Link sublayer 1: Medium access control (MAC)
Table 5 ā€“ Receiver parameters
29 Figure 2 ā€“ Carrier-sense timing
30 7.3.3 Link sublayer 2: Data Link Service (DLS)
Figure 3 ā€“ Power versus time mask
Table 6 ā€“ Definition of timings for Figure 3
31 Figure 4 ā€“ Transmission packet
32 Figure 5 ā€“ Training sequence
Table 7 ā€“ Start-buffer
33 Table 8 ā€“ Summary of the transmission packet
34 Figure 6 ā€“ Transmission timing
Table 9 ā€“ Transmission timing
35 7.3.4 Link sublayer 3: Link management entity (LME)
Figure 7 ā€“ Example for CSTDMA access
Table 10 ā€“ Access parameters
38 Table 11 ā€“ Use of VDL messages by a Class B “CS” AIS
39 Table 12 ā€“ Number of data bits for use with Message 14
40 Table 13 ā€“ Contents of Message 18
41 Table 14 ā€“ Message 24 Part A
Table 15 ā€“ Message 24 Part B
42 Table 16 ā€“ Contents of Message 23
43 7.4 Network layer
7.4.1 General
7.4.2 Dual channel operation
Table 17 ā€“ Reporting interval settings for use with Message 23
44 7.4.3 Channel management
7.4.4 Distribution of transmission packets
7.4.5 Data link congestion resolution
7.5 Transport layer
7.5.1 General
Table 18 ā€“ Channel management
45 7.5.2 Transmission packets
7.5.3 Sequencing of data packets
7.6 Digital selective calling (DSC)
8 Test conditions
8.1 General
8.2 Normal and extreme test conditions
8.2.1 Normal test conditions
8.2.2 Extreme test conditions
8.3 Test signals
46 8.3.1 Standard test signal number 1
8.3.2 Standard test signal number 2
8.3.3 Standard test signal number 3
8.3.4 Standard test signal number 4
8.3.5 Standard test signal number 5
Figure 8 ā€“ Format for repeating four-packet cluster
47 8.4 Test arrangements
8.4.1 Standard test environment
Table 19 ā€“ Content of first two packets
Table 20 ā€“ Fixed PRS data derived from ITU-T O.153
48 8.4.2 Modes of operation of the transmitter
8.4.3 Common test conditions for protection from invalid controls
8.4.4 Measurement uncertainties
49 9 Power supply, environmental and EMC tests
9.1 Test summary
50 Table 21 ā€“ Test summary
51 9.2 Vibration/shock
9.2.1 Vibration
9.2.2 Shock
9.3 Performance tests/checks
52 9.4 Undervoltage test (brown out)
9.4.1 Purpose
9.4.2 Method of test
9.4.3 Required result
10 Operational tests
10.1 General
10.1.1 Quality assurance
10.1.2 Safety of operation
10.1.3 Additional features
53 10.2 Modes of operation
10.2.1 Autonomous mode
54 10.2.2 Assigned mode
55 10.2.3 Polled mode/interrogation response
56 10.3 Messages extending one time period
10.3.1 Method of measurement
10.3.2 Required results
10.4 Channel selection
10.4.1 Valid channels
10.4.2 Invalid channels
10.5 Internal GNSS receiver
57 10.6 AIS information
10.6.1 Information content
58 10.6.2 Information update rates
59 10.7 Initialisation period
10.7.1 Method of measurement
10.7.2 Required results
10.8 Alarms and indications, fall-back arrangements
10.8.1 Built-in integrity test
60 10.8.2 Transceiver protection
10.8.3 Transmitter shutdown procedure
10.8.4 Position sensor fallback conditions
61 10.8.5 Speed sensors
10.9 User interface
10.9.1 Display
10.9.2 Message display
62 10.9.3 Static data input
10.9.4 External interfaces
11 Physical tests
11.1 TDMA transmitter
11.1.1 Frequency error
63 11.1.2 Carrier power
11.1.3 Transmission spectrum
Figure 9 ā€“ Measurement arrangement for carrier power
64 11.1.4 Modulation accuracy
Figure 10 ā€“ Emission mask
65 11.1.5 Transmitter output power versus time function
Figure 11 ā€“ Measurement arrangement for modulation accuracy
Table 22 ā€“ Peak frequency deviation versus time
66 11.2 TDMA receivers
11.2.1 Sensitivity
67 11.2.2 Error behaviour at high input levels
Figure 12 ā€“ Measurement arrangement
68 11.2.3 Co-channel rejection
Figure 13 ā€“ Measurement arrangement with two generators
69 11.2.4 Adjacent channel selectivity
11.2.5 Spurious response rejection
70 Figure 14 ā€“ SINAD or PER/BER measuring equipment
72 11.2.6 Intermodulation response rejection
Figure 15 ā€“ Measurement arrangement for intermodulation
73 11.2.7 Blocking or desensitisation
Table 23 ā€“ Frequencies for inter-modulation test
74 11.3 Conducted spurious emissions
11.3.1 Spurious emissions from the receiver
11.3.2 Spurious emissions from the transmitter
75 12 Specific tests of link layer
12.1 TDMA synchronisation
12.1.1 Synchronisation test sync mode 1
76 12.1.2 Synchronisation test sync mode 2
12.1.3 Synchronisation test with UTC
12.2 Carrier-sense tests
12.2.1 Threshold level
77 Figure 16 ā€“ Configuration for carrier-sense threshold test
78 12.2.2 Carrier-sense timing
12.3 VDL state/reservations
12.3.1 Method of measurement
Table 24 ā€“ Required threshold test results
Table 25 ā€“ Required carrier-sense timing results
79 12.3.2 Required results
12.4 Data encoding (bit stuffing)
12.4.1 Method of measurement
12.4.2 Required results
12.5 Frame check sequence
12.5.1 Method of measurement
12.5.2 Required results
12.6 Slot allocation (channel access protocol)
12.6.1 Autonomous mode allocation
80 12.6.2 DSC listening periods
12.7 Assigned operation
12.7.1 Assignment priority
12.7.2 Entering rate assignment
12.7.3 Reverting from rate assignment
81 12.7.4 Reverting from quiet mode
12.7.5 Retry of interrogation response
12.8 Message formats
12.8.1 Received messages
82 12.8.2 Transmitted messages
13 Specific tests of network layer
13.1 Regional area designation by VDL message
13.1.1 Method of measurement
13.1.2 Required results
Figure 17 ā€“ Regional area scenario
83 13.2 Regional area designation by serial message or manually
13.2.1 Method of measurement
13.2.2 Required result
13.3 Management of received regional operating settings
13.3.1 Replacement or erasure of dated or remote regional operating settings
Table 26 ā€“ Required channels in use
84 13.3.2 Channel management by addressed Message 22
13.3.3 Invalid regional operating areas
85 13.3.4 Continuation of autonomous mode reporting rate
13.3.5 Other conditions
86 Annex A (informative) Results of computer simulations and testing of CSTDMA technology
A.1 Computer simulations
Figure A.1 ā€“ Effect on Class A AIS messages of Class B messages
87 A.2 Carrier-sense tests
Figure A.2 ā€“ Reception of messages by Class A AIS
Figure A.3 ā€“ Reception of messages by Class B AIS
88 A.3 Range tests
A.4 Conclusion
Figure A.4 ā€“ Range achieved by a Class A AIS from Class B AIS
89 Annex B (informative) Description of the system
90 Annex C (normative) DSC channel management
C.1 DSC functionality
C.2 DSC time sharing
91 C.3 DSC functionality tests
C.3.1 General
C.3.2 Regional area designation
C.3.3 Scheduling
C.3.4 DSC flag in Message 18
C.3.5 DSC monitoring time plan
Table C.1 ā€“ DSC monitoring times
92 C.3.6 Replacement or erasure of dated or remote regional operating settings
C.3.7 Test of addressed telecommand
93 C.3.8 Invalid regional operating areas
C.4 DSC receiver tests
C.4.1 General
C.4.2 Maximum sensitivity
94 C.4.3 Error behaviour at high input levels
C.4.4 Co-channel rejection
C.4.5 Adjacent channel selectivity
95 C.4.6 Spurious response rejection
C.4.7 Intermodulation response rejection
96 C.4.8 Blocking or desensitisation
97 Annex D (informative) Channel management regions
Figure D.1 ā€“ Channel management regions used for test given in 13.3.1
98 Bibliography

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BS IEC 62287-1:2017+A1:2022
$215.11