satellite

1. BASICS OF SATELLITE
COMMUNICATION
14EC2050

2. Course Objectives
This course aims to:
• Overview
• Orbits
• Launching
• Link Power budjet
• Multiple access technique
• Current technology

7. Orbits
• Types- Polar, Equator, inclined.
Low Earth Orbit satellites-
i) 150-500 Km away from earth.
ii) Travels at 28,500km/hr.
iii) Takes 90 mins to revolve around earth.
iv) Line Of Sight– 15 mins
Applications
Earth observation satellites and spy satellites

8. • Medium earth orbit satellites:
i)9500-19000km away from earth.
ii) 5-12 hours to revolve around the earth
iii)Line of sight- 2-4 hours
Application:
navigation, communication, space environment
science

9. High elliptical orbit satellite
Applications: Polar coverage, Russia.

10. Geosynchronous or geostationary
satellite
• 35,786 km away from earth.
• 24 hrs to revolve around earth.
• 3 satellite covers the whole earth with 120
degree angle.

12. 6/4 Giga Herts
30/20 Giga Herts
14/12 Giga Herts

13. UPLINK MODEL

14. TRANSPONDER

15. DOWN LINK MODEL

16. REFERENCES
1) Dennis Roddy,"Satellite Communication", McGraw Hill, 2006.
2) Louis. J. Ippolito Jr." Satellite Communication Systems Engineering“
, John Wiley Publications, 2008.
3) Bruce R. Elbert, "The Satellite Communication Applications Hand Book
” Artech House, Boston,1997.
4)Tri T.Ha,"Digital Satellite Communication",2nd Edition,
McGraw Hill,New york.1990.
5)K.Feher,”Digital Communication Satellite / Earth Station Engineering”,
Hall Inc, New Jersey,1983.
6) Timothy Pratt, Charles Bostian, Jeremy Allnutt,
“Satellite Communications