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EGC...................................................................................................... Enhanced Group Call
The system for broadcasting messages via Inmarsat C mobile satellite communications
system that supports two services: SafetyNET and FleetNET.
EIA .................................................................................... Electronic Industries Association
EIRP.....................................................................Equivalent Isotropically Radiated Power
Effective Isotropically Radiated Power, a measure of transmitted power.
E-mail.............................................................................................................. Electronic mail
A global message-handling system whereby subscribers to commercial e-mail services
can exchange electronic messages and data files between computers. E-mail services are
provided by some service providers and private organizations. Access to e-mail services
may be via PSTN, PSDN networks or the Internet.
EME ....................................................................................Externally Mounted Equipment
ENID ..........................................................................................EGC network identification
EOF ....................................................................................................................... End Of File
EPADR................................................................... Enhanced Pre-assigned Data Reporting
EXT .............................................................................................................................External
E/W........................................................................................................................... East/West
F
FleetNET:
A commercial service for the broadcasting and automatic reception of fleet management
and general public information by means of direct printing through Inmarsat’s EGC
system.
Footprint (of a satellite):
The area on the Earth’s surface (sea or land) covered by the satellite and where an
antenna can obtain line-of-sight communications. In the Inmarsat systems, this area is
also known as the ocean region or coverage area.
FRLP .................................................................................Forward ID Return ID Link Pair
FTU ............................................................................................ Frequency Translation Unit
G
GMDSS ..........................................................Global Maritime Distress and Safety Service
GMDSS: Global Maritime Distress and Safety System with the basic concept that SAR
authorities ashore, in addition to shipping in the vicinity of a casualty, must be rapidly
alerted of the distress event so that they can assist with coordinated SAR operation with
minimum delay (or a similar definition).
GPS................................................................................................Global Positioning System
System that provides the geographic location of a vessel. This service uses American
military satellites, which have been made available for civilian use.
Ground segment:
The network of LESs which provide a link between the space segment and the terrestrial
telecommunication networks.
H
HPA ......................................................................................................High Power Amplifier
HYB............................................................................................................................... Hybrid
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