Introduction to
satellite communication:
Satellites
are specifically made for telecommunication purpose. They are used for mobile
applications such as communication to ships, vehicles, planes, hand -held
terminals and for TV and radio broadcasting.
They
are responsible for providing these services to an assigned region (area) on
the earth. The power and bandwidth of these satellites depend upon the
preferred size of the footprint, complexity of the traffic control protocol schemes
and the cost of ground stations.
A
satellite works most efficiently when the transmissions are focused with a
desired area.
When
the area is focused, then the emissions don ‟ t go outside that designated area
and thus minimizing the interference to the other systems. This leads more
efficient spectrum usage.
Satellite‟s
antenna patterns play an important role and must be designed to best cover the
designated geographical area (which is generally irregular in shape).
Satellites
should be designed by keeping in mind its usability for short and long term
effects throughout its life time.
The
earth station should be in a position to control the satellite if it drifts
from its orbit it is subjected to any kind of drag from the external forces.
Applications Of Satellites:
ï‚·
Weather Forecasting
ï‚·
Radio and TV Broadcast
ï‚·
Military Satellites
ï‚·
Navigation Satellites
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Global Telephone
ï‚·
Connecting Remote Area
ï‚·
Global Mobile Communication
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