Introduction to communication satellites Types of satellites Major problems for satellites Applications of communication satellites

1. Satellite
Communication

2. Contents
• Introduction to communication satellites
• Types of satellites
•Major problems for satellites
•Applications

3. Introduction
•SATCOM
•Artificial satellite stationed in space
•Telecommunications

4. Several Types
•LEOs - Low earth orbit
•GEOs - Geostationary earth orbit

5. Low-Earth-orbiting
Satellites
•circular orbit about 400 kilometers above
the earth’s surface
•90 minutes to revolve around the earth
•less expensive to launch into orbit than
GEOs

6. GEOs - Geostationary Satellites
•Revolves around the earth at a constant
speed once per day
•35000km above the earth surface
•A few GEOs can cover most of the surface
of the earth

7. Major Problems for
Satellites
•Positioning in orbit
•Stability
•Power
•Harsh environment

8. Telephony
•First and historically most important
application
•Public Switched Telephone
Network, telephone calls

9. Satellite Television
•Few signals of large bandwidth to
many receivers
•GEOs

10. Other
applications
•Mobile satellite
•Satellite radio
•Satellite Internet
•Military uses
•Navigation

11. Thank You