Furuno FELCOM19 Inmarsat Mini-C MES Operator's Manual page 14

1. INMARSAT C SYSTEM OVERVIEW
NCS
LES
LES
0.0 m
-/+: To set option
AOR-West
OCC: Operation Control Center
SCC: Satellite Control Center
NCS: Network Coordination Station
MES: Mobile Earth Station
LES: Land Earth Station
The Inmarsat C system consists of the Operation Control Center (OCC), Satellite Con-
trol Centers (SCC), Network Coordination Stations (NCS), Land Earth Stations (LES)
and Mobile Earth Stations (MES). The OCC, located at Inmarsat's London headquar-
ters, coordinates a wide range of activities in the Inmarsat system, including commis-
sioning of mobile earth stations.
The Inmarsat C system divides the world into four regions and each region is covered
by its own satellite.
Region
AOR-West
AOR-East
IOR
POR
In each region there is one NCS and several LESs. The NCS keeps track of all Inmar-
sat C transceivers in its region and broadcasts information such as navigational warn-
ings, weather reports and news. The LESs provide the link between the MES and the
terrestrial telecommunications networks via satellite.
1-2
OCC
SCC
LES
Satellite
MES
0.0 m 0.0 m
-/+: To set option -/+: To set option
Inmarsat-C system configuration
Inmarsat system satellites
Satellite
Inmarsat 3, F4
Inmarsat 3, F2
Inmarsat 3, F1
Inmarsat 3, F3
Same as left Same as left
AOR-East IOR
Satellite position
54.0°W
15.5°W
64.0°E
178.0°E
Same as left
POR