Page 49 - SATELLITE AND RADAR COMMUNICATION SYSTEM

2.4 Apply the understanding

of earth station

Application types of earth station

The antenna unit mostly used in earth stations is reflector antenna, more

specifically parabolic reflector, due to the reason that these offer high gain
and low sidelobe characteristics.
It is to be noted here that with the interconnection of large traffic nodes,

the designing complexity of the earth station increases. In the earth
station, the G/T ratio is a crucial parameter that characterizes it. It is the

ratio of antenna gain to the system noise temperature. A large earth
station uses large antennas thus can manage various telephone signals and

television channels. While a small earth station holds the ability to carry
only one voice or TV signals.

Transmit Receive

only: only:
These stations is •These stations are
used in data mostly used in
collection CATV
systems. (community an-
tenna TV systems)

Transmit &
Receive:
•These stations are
used for two way
communication

like telephony.

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Satellite System Elements