Above deck unit for automatic identification system

Details Above deck unit for automatic identification system Above deck unit for automatic identification system

G - Physics

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G01S 1/68 (2006.01) B63B 17/00 (2006.01) B63B 49/00 (2006.01) G01S 1/00 (2006.01) G08G 3/00 (2006.01) H01Q 1/34 (2006.01) H01Q 9/04 (2006.01) H01Q 9/32 (2006.01) H01Q 21/28 (2006.01)

Patent

CA 2358816

An above deck unit for an AIS (automatic identification system) is externally installed on a ship. The above deck unit includes a radio circuit and an associated antenna for transmitting and receiving a message, a position detector and an associated antenna, associated controller and power supply, and a container for storing these elements. An inboard transmission path, e.g., a cable, connects the outdoor unit for they AIS and an AIS display serving as an interface means for the crew. A signal to be transmitted through the inboard transmission path is a processed, for example, an amplified signal, rather than an unprocessed output of a VHF antenna. Therefore, problems of signal loss or degradation along the inboard transmission path are unlikely to occur. Because the unit is incorporated within a single container, it can easily be installed and transferred. With this antenna complex, it is also possible to suppress interference between antennas.

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