Ais In An Operational Environment - ACR Electronics GLOBALWATCH UAIS Manual

1.2 AIS in an Operational Environment

This illustration depicts a typical AIS System, where two or more AIS
equipped vessels (and shore based systems) are automatically
communicating with each other.
On the bottom, a typical GlobalWatch
shown. The GlobalWatch
and in connection with the VHF, and GPS-Antennas, the minimal requirements for
Transponder operation are fulfilled.
Both vessels in the above illustration are equipped with a GlobalWatch
other certified AIS-Transponder). Due to "Time – Synchronization" they use the same
organization of free and allocated windows (Slots) in the shared VHF Data Link (this
method is called "Self Organized Time Division Multiple Access") to send and receive
messages.
Without the necessity of any active interaction, both vessels know exactly who or what is
cruising nearby and where the individual object is heading.
TM
GlobalWatch UAIS Installation Manual
TM
UAIS installation in a common environment is
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UAIS is connected to the vessels emergency power supply,
2
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UAIS (or any
Y1-03-0177A
Version 1.0