IEC 62320-1:2015(E) specifies the minimum operational and performance requirements, methods of testing and required test results for AIS Base Stations, compatible with the performance standards adopted by IMO Resolution 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 Base Stations. It does not include specifications for the display of AIS data on shore. This second edition cancels and replaces the first edition published in 2007 and its Amendment 1:2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – incorporation of the technical characteristics included in Recommendation ITU R M.1371 5; – the BCE, BCF and CAB sentences replaced with BCG, BCL and RST; – comment blocks replaced with TAG blocks; – scheduled broadcast of Message 26 added; – Message 27 control added; – transmitter intermodulation attenuation harmonised with ITU; – 12,5 kHz channel operation removed; – transmission of Message 24A, Message 25 and Message 26 added; – 90 % channel load test with VSI and TAG blocks enabled added.

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7	CONTENTS
12	INTRODUCTION
13	1 Scope 2 Normative references
14	3 Abbreviations
15	4 Functional layout of an AIS Base Station 4.1 General 4.2 Functional block diagram of an AIS Base Station
16	4.3 General VDL requirements 4.3.1 Sources of VDL messages for transmission Figures Figure 1 – Functional block diagram of an AIS Base Station
17	4.3.2 Use of access schemes 4.4 Functional diagram for operation of a Base Station
18	4.5 Base Station input/output sentence formatters Figure 2 – Functional block diagram dependent and independent operation
19	Tables Table 1 – Base Station input/output sentence formatters
20	5 Functional definition of the radio interface of the AIS Base Station 5.1 General requirements of the physical layer
21	5.2 Required parameter settings for the physical layer of the AIS Base Station Table 2 – Required parameter settings for an AIS Base Station Table 3 – Required settings of physical layer constants Table 4 – Bandwidth related parameters of the physical layer of the AIS Base Station
22	5.3 Minimum requirements for the TDMA transmitter of the AIS Base Station Table 5 – Minimum required TDMA transmitter characteristics
23	Figure 3 – Modulation spectrum for slotted transmission Figure 4 – Power versus time mask Table 6 – Definition of timings for Figure 4
24	5.4 Minimum requirements for the TDMA receivers of the AIS Base Station 5.5 Shutdown procedure for an AIS Base Station 6 Requirements for AIS Base Station 6.1 General Table 7 – Minimum TDMA receiver characteristics
25	6.2 Dependent Base Station requirements 6.2.1 General rules 6.2.2 General processing diagram
26	6.2.3 AIS Base Station response to PI input 6.2.4 AIS Base Station response to VDL input 6.3 Independent Base Station requirements 6.3.1 General rules Figure 5 – General processing diagram Table 8 – Base Station response to input messages from the VDL
27	6.3.2 General processing diagram 6.3.3 AIS Base Station response to PI input Figure 6 – General processing diagram
28	6.3.4 AIS Base Station interaction on the VDL Table 9 – Base Station response to input messages from the VDL
29	Table 10 – Required content of FSR and VSI output
30	Table 11 – Base Station response to ABM, BBM and AIR input on the PI
31	Figure 7 – Flow diagram for AIS Base Station response to VDM input
32	6.3.5 Autonomous channel management
33	6.4 BIIT conditions 6.5 Default settings after reset Table 12 – BIIT alarm conditions monitored by an AIS Base Station Table 13 – Settings after reset command
34	6.6 Further requirements for optional features 6.6.1 General 6.6.2 External synchronisation source option
35	6.6.3 DGNSS dedicated port option 7 Functional definition of the presentation interface of the AIS Base Station 7.1 Physical requirements for the presentation interface 7.2 Presentation interface data exchange 7.2.1 General 7.2.2 Base Station presentation interface output 7.2.3 Base Station presentation interface input 7.2.4 TAG blocks on presentation interface Table 14 – Required TAG block functions
36	8 Tests of AIS Base Stations – Method of measurement and required results 8.1 General 8.2 Test conditions 8.2.1 Normal test conditions 8.2.2 Extreme test conditions 8.2.3 Standard test environment
37	8.2.4 Test signals Figure 8 – Format for repeating four-packet cluster Table 15 – Content of first two packets
38	8.2.5 Arrangements for test signals applied to the receiver input 8.2.6 Encoder for receiver measurements 8.2.7 Waiver for receivers 8.2.8 Impedance 8.2.9 Artificial antenna (dummy load) 8.2.10 Facilities for access 8.2.11 Operation of the transmitter Table 16 – Fixed PRS data derived from ITU-T O.153
39	8.2.12 Measurement uncertainties 9 Physical radio tests 9.1 Remark 9.2 General transceiver tests 9.2.1 Transceiver protection test Table 17 – Maximum values of absolute measurement uncertainties
40	9.2.2 Transmitter shutdown procedure 9.3 TDMA transmitter 9.3.1 General 9.3.2 Frequency error Figure 9 – Measurement arrangement for frequency error
41	9.3.3 Carrier power 9.3.4 Modulation spectrum slotted transmission Figure 10 – Measurement arrangement for carrier power
42	9.3.5 Transmitter test sequence and modulation accuracy verification Figure 11 – Measurement arrangement for modulation accuracy
43	9.3.6 Transmitter output power versus time function 9.3.7 Intermodulation attenuation
44	Figure 12 – Measurement arrangement for intermodulation attenuation
45	9.4 TDMA receivers 9.4.1 Sensitivity 9.4.2 Error behaviour at high input levels Figure 13 – Measurement arrangement for sensitivity Figure 14 – Measurement arrangement for error behaviour
46	9.4.3 Co-channel rejection Figure 15 – Measurement arrangement for co-channel rejection
47	9.4.4 Adjacent channel selectivity 9.4.5 Spurious response rejection Figure 16 – Measurement arrangement for adjacent channel selectivity
48	Figure 17 – PER/BER or SINAD measuring equipment
50	9.4.6 Intermodulation response rejection Figure 18 – Measurement arrangement for inter-modulation
51	9.4.7 Blocking or desensitisation Figure 19 – Measurement arrangement for blocking or de-sensitisation Table 18 – Frequencies for inter-modulation tests
52	9.5 Conducted spurious emissions at the antenna 9.5.1 Spurious emissions from the receiver 9.5.2 Spurious emissions from the transmitter 10 Functional tests for Base Station 10.1 Pre-set-up 10.1.1 Basic initialisation
53	10.1.2 Pre-setup of dependent base station 10.1.3 Pre-setup for independent mode
54	10.2 Normal operation 10.2.1 Base Station configuration and services
66	Table 19 – Calculation of parameters in Message 16
69	10.2.2 Addressed and broadcast messaging
72	10.2.3 Interrogations and interrogation response
73	10.2.4 Addressed operation
74	10.2.5 Slot phase and frame synchronisation – Base Station operation
78	10.2.6 Position source
79	10.2.7 Alarm messages
80	10.3 Selection of transmission slots 10.3.1 RATDMA Transmission 10.3.2 Intentional slot reuse (link congestion)
81	10.4 Legacy support 10.4.1 Purpose 10.4.2 Method of measurement
82	10.4.3 Required results 10.5 TAG Block encapsulation 10.5.1 Application
83	10.5.2 TAG Block capabilities 10.5.3 Activation of Source identification for output
84	10.5.4 Activation of Destination identification
85	10.5.5 Activation of Source identification for input 10.5.6 Use of multiple Source identifications for input
86	10.5.7 Test of grouping by TAG blocks for output
88	10.5.8 Test of UNIX time output 10.5.9 Test of Line-count output
89	10.6 Test of optional functions 10.6.1 Test of external synchronization source
90	10.6.2 Test of Message 17 based on RTCM 10402 input
91	Annex A (normative) AIS Base Station sentences A.1 General A.2 ACM – AIS Base Station addressed channel management command
92	A.3 ADS – Automatic device status
93	A.4 AGA – AIS Base Station broadcast of a group assignment command
95	A.5 ASN – AIS Base Station broadcast of assignment command
96	A.6 BCG – Base Station configuration, general command
97	A.7 BCL – Base Station configuration, location command
98	A.8 DLM – Data link management slot allocations for Base Station command
100	A.9 ECB – Configure broadcast schedules for Base Station messages, command
101	A.10 FSR – Frame summary of AIS reception Figure A.1 – Frame summary timing
102	A.11 RST – Equipment Reset Command
103	A.12 SID – Set an equipment’s identification and command
104	A.13 SPO – Select AIS device’s processing and output command
105	A.14 TFR – Transmit feed-back report
106	A.15 TPC – Transmit slot prohibit command
107	A.16 TSA – Transmit slot assignment
108	A.17 TSR – Transmit slot prohibit status report
109	A.18 VSI – VDL signal information
110	Annex B (normative) Legacy AIS Base Station sentences B.1 Legacy sentences B.1.1 BCE – Extended general Base Station configuration B.1.2 BCF – General Base Station configuration
112	B.1.3 CAB – Control AIS Base Station B.1.4 TSP – Transmit slot prohibit
113	B.2 Comment block
114	B.3 Comment block parameters for AIS B.3.2 Comment block parameter format B.3.3 Comment block “hexadecimal checksum” (*hh) B.3.4 Line (either a comment block, or comment block and sentence)
115	B.3.5 Group (associated lines) B.3.6 Parameter-code dictionary B.3.7 Line linking (sentence linking)
116	B.3.8 Comment block used with query sentences
118	Annex C (normative) IEC 61162-1 sentences modified for use with AIS Base Station C.1 General C.2 CBR – Configure broadcast rates for AIS AtoN Station message command
119	C.3 MEB – Message Input for broadcast command
121	C.4 NAK – Negative acknowledgement
123	Annex D (normative) AIS Base Station TAG block sentences D.1 General D.2 CPC – Configure parameter-code for UNIX time parameter (c)
124	D.3 CPD – Configure parameter-code for Destination identification parameter (d) D.4 CPG – Configure parameter-code for the sentence-grouping parameter (g)
126	D.5 CPN – Configure parameter-code for the line-count parameter (n)
128	D.6 CPS – Configure parameter-code for the Source identification parameter(s) D.7 TBR – TAG block report request
129	D.8 TBS – TAG block listener Source identification configuration command
131	Bibliography

Published By	Publication Date	Number of Pages
BSI	2015	134


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Status	Definitive
Pages	134
Publication Date	2015-03-31
ISBN	978 0 580 86734 7
Standard Number	BS EN 62320-1:2015
Title	Maritime navigation and radiocommunication equipment and systems. Automatic identification system (AIS) – AIS Base Stations. Minimum operational and performance requirements, methods of testing and required test results
Identical National Standard Of	IEC 62320-1:2015, EN 62320-1:2015, EN 62264-5:2012
Replaces	BS EN 62320-1:2007, BS EN 62320-1:2007+A1:2009
Descriptors	Performance testing, Radio receivers, Radio equipment, Data transmission, Performance, Radiocommunication, Marine navigation, Radio transmitters, Automatic, Identification methods, Messages, Navigation, Information exchange
Publisher	BSI
Committee	EPL/80
ICS Codes	47.020.70 - Navigation and control equipment

BS EN 62320-1:2015

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