User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-X and HSD-Xi High-speed Data Terminal
23-15-30 A-1
8 MAY 09
APPENDIX A: INMARSAT SATELLITE BEAM
C
OVERAGE
Inmarsat operates strategically placed geostationary satellites called I-3 and I-4. I-3 satellites
provide access to services such as Swift64 and Aero H/H+, and I-4 satellites provide access
to SBB services.
Each I-3 satellite is located over and named
after an OR. The four satellite ORs are:
• Atlantic Ocean Region-East (AOR-E)
• Atlantic Ocean Region-West (AOR-W)
• Indian Ocean Region (IOR)
• Pacific Ocean Region (POR)
Figure A-1 represents the satellite OR
s with approximate transfer coordinates for satellite
transitions.
Figure A-1 Satellite ORs
The four satellite ORs are made up
of smaller, spot-beam coverage areas. The following maps
show the Inmarsat satellite spot-beam coverage for the four ORs, and a composite map of
the four regions combined.
NOTE: Figure A-2 and Figure A-3 depict Inmarsat's expectations of coverage but do not
represent a guarantee of service and s
hould not be relied upon. The availability of
service at the edge of coverage areas fluctuates depending upon a variety of
conditions.