Page 52 - SATELLITE AND RADAR COMMUNICATION SYSTEM

Answer for Tutorial 2

Visualize two segments between

2a space and earth in the satellite
system with the aid of a diagram.

Two basic elements:
1. Space segment where the
satellites: receives, amplifies,

and retransmits the signals back
to earth.

2. Earth Segment
Uplink transmitter station :

transmits signals to the satellite.
Downlink receiving station:

receives the signals from
satellite

List and explain the satellite subsystem.

2b  Power system: all communication satellites obtain their
electrical power from solar cells, which converts incident

sunlight into electrical energy.
 Propulsion: to provide the thrusts required to impart the

necessary velocity changes
 Altitude and orbit control: to takes care of the orientation of
satellite in its respective orbit.

 Thermal control: to maintain the satellite platform within its
operating temperature limits

 Telemetry, Tracking and Command: to monitors the on-board
equipment operations, transmits equipment operation data to

the earth control station, and receives the earth control
station's commands to perform equipment operation

adjustments.

44 Antenna: to receiving and transmitting signals from and towards
ground

Satellite System Elements—Tutorial 2