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Automatic Identification System (AIS) for ships AIS 110 BF - BLUE FORCE

Automatic Identification System (AIS) for ships AIS 110 BF - BLUE FORCE
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Automatic Identification System (AIS) for ships AIS 110 BF - BLUE FORCE - 1

Automatic Identification System Blue Forces is a common term for own units or friendly forces. The AIS 110 Blue Force is an AIS class A mobile station that also offers secure com- munication in addition to standard AIS functionality. This means that all users of the Blue Force units can monitor each other and be monitored by AIS Base Stations prepared with Blue Force tracking capabili- ties which are covering the area. In secure mode this AIS mobile station will still be able to see all AIS Mobile Stations within the coverage area, but are not revealing own position to others than friendly forces. Secure Mode The AIS 110 BF feature three different modes. 2. Receive only mode In mode 1 the AIS unit will act as a standard AIS class A mobile station. In mode 2 the unit will only listen. without any transmitting. In mode 3 it will encrypt trans- mitted AIS data, making AIS information unavailable (unreadable) for others except blue forces. The vessel's primary GPS receiver narmally will be interfaced with the AIS and is used as the main position- ing source. However, the AIS 110 BF also incorporates an "all-in-view" GPS receiver which can be used as back Heading Interface Vessel heading as derrived from the gyro compass may be interfaced to the AIS. This may require a gyro con- verter if the heading output from the gyro compass is a stepper or synchro signal and not a serial line signal which uses the NMEA data protocol for data exchange. Dedicated VHF frequencies are used for AIS data com- munication and the range is dependant on the height of the VHF antenna. In order to avoid interference with the ship's VHF voice communication, the AIS VHF antenna must be installed in accordance with IMO requirements. As the AIS protocol, which utilizes time-slots for trans- mission and reception of data is being used, an almost unlimited number of users may operate on the system at the same time without causing interferance problems. Chart and Radar Interfacing AIS can be interfaced to electronic charts or radar pro- vided they support the AIS interface. When interfacing AIS to radar and chart plotters, AIS target information as position, heading course and speed becomes available to the mariner and increase reliability of received naviga- tion data from other vessels. AIS 110 BF can be provided with an eksternal MKD for graphical display of received AIS targets. Vessels posing the potential risk of a collision are shown in red. Vessels passing safely are shown in

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Automatic Identification System (AIS) for ships AIS 110 BF - BLUE FORCE - 2

- Three different modes - Receive only mode - Secure mode - Ship name/Call sign/MMSI/IMO number - Date and time in UTC time of composition of message - Position WGS84; Latitude/Longitude degrees & minutes - Course over ground (COG) in degrees - Speed over ground (SOG) in knots and 1/10 knots - Actual maximum draught in 1/10 of meters - Ship/Cargo (Static and voyage realated data) - Number of persons on board - Graphical display with optional external MKD BASIC INTERFACE DIAGRAM THED RAHTY HEADING DATA ■" LASS- A MOBILE STATION WITH ÜSFLAY AND DEDICATED KEYS Technical specifications Radio...

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