Chapter 1: Introduction
8 About SwiftBroadband
About SwiftBroadband
Geostationary Inmarsat satellites
The Aero SwiftBroadband services are based on 4 geostationary satellites
situated above the equator. Geostationary means that the satellites are
stationary in relation to Earth, i.e. they rotate at a speed that matches the
rotation speed of the Earth. Each satellite covers a certain area, this is also
called a footprint. It supports a number of powerful narrow-spot-beams
making the SwiftBroadband service available virtually anywhere on the
earth, this is shown on the coverage map on the next page.
The satellites are your connection to the Internet and telephone networks,
and they are run and managed by Inmarsat. Inmarsat is the leading provider
of global mobile communications services. Inmarsat keeps track of which
SwiftBroadband Units are logged on to the system, assigns a free channel
and manages the data when a network connection is established or a call is
made.
SwiftBroadband coverage
The SwiftBroadband service is a mobile satellite service that offers high-
speed data up to 432 kbps (512 kbps with X-Stream), voice telephony and
ISDN. Using this service users can access e-mail, corporate networks and the
Internet, transfer files and make telephone calls.
The SwiftBroadband service by Inmarsat is accessible worldwide, except the
extreme polar regions. It is covered by the four satellites. The following
figure shows a world map with the areas covered by each of the I4 satellites.