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When the Tron 40VDR AIS is activated (1), the next passing satellite (2) will
detect the transmitted signal and relay it to an antenna at a LUT (3). The
signal will be routed from the LUT to an MCC (4). The MCC will then relay
the signal to the appropriate rescue coordination center (5) that will
organize the rescue operation (6).
The system consists of:
•
Satellites in low-altitude earth orbit (LEOSAR), geostationary
orbit (GEOSAR) and medium latitude earth orbit (MEOSAR),
that process and/or relay signals transmitted by beacons.
•
Local user terminals (LUT) that receives and processes the
signals from the satellites.
•
Mission control centers (MCC) that distributes the signals to
the appropriate search and rescue authorities.
Each EPIRB must be programmed with its own unique code in the system
to identify the ship in distress. It is important that the EPIRB is registered in
the database for the applicable country. See chapter 5.1 for more details.
The LEOSAR system has good coverage worldwide, including polar regions,
and calculates the location of an activated EPIRB using Doppler processing
techniques.
