Diploma in ECE Study Material | ADVANCED COMMUNICATION SYSTEMS Unit 4 | Yuvasallinfo
Diploma in ECE Study Material | ADVANCED COMMUNICATION SYSTEMS Unit 4 | Yuvasallinfo
ADVANCED COMMUNICATION SYSTEMS Study Material, Diploma Study Material given Below:
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34051 ADVANCED COMMUNICATION SYSTEMS
Unit-4 Syllabus
SATELLITE COMMUNICATION
Satellite system: Kepler’s I,II,II laws – orbits – launching orbits – types – Geostationary synchronous satellites – Advantages – Apogee – Perigee – Active and passive satellite – Earth eclipse of satellite. Antenna: Parabolic reflector antenna – cassegrain antenna. Space segment: Power supply- Attitude control- station keeping – Transponders – TT and C subsystem – Antenna subsystem. Earth segment: Block diagram of Transmit receive earth station – Satellite mobile services – Basics of GPS.
MICROWAVE COMMUNICATION: Microwave frequency ranges – microwave devices – Parametric amplifiers –Travelling wave tubes – simple block diagram of microwave transmitter, receiver and microwave link repeater
Important 2 Marks
1. Define satellite communication
2. Define kepler’s first law
3. Define kepler’s second law
4. Define kepler’s third law
5. Mention the different types of satellite orbits
6. Define geostationary orbit
7. Mention the height of geostationary orbit
8. Define LEO and MEO
9. Define active satellite
10. Define apogee and perigee
11. Define passive satellite
12. Define earth eclipse
13. What is the use of launching orbit?
14. Define antenna
15. Define attitude control
16. What is station keeping
17. Define transponder
18. Define TTC sub system
19. What is the use of antenna subsystem?
20. Mention the parts of ground segments of a satellite communication system
21. What is INTELSAT?
22. Define GPS
23. How many satellites are used in GPS?
24. Define MSAT
25. DEFINE microwaves
26. Mention the range of microwaves frequency
27. Mention any two types of microwaves devices
28. What is the use of parametric amplifier’
29. What are the advantages of parametric amplifier
30. Explain TWT
31. What is the use of microwave repeater
32. Define launching orbit? And mention its types
Important 3 Marks
1. Draw the general structure of a satellite communication system
2. Explain kepler’s first law
3. Define orbit and mention its types
4. Explain orbit and mention its types
5. State the advantages and disadvantages of geostationary satellites
6. Explain apogee and perigee
7. Explain earth eclipse of satellite
8. Explain transponders
9. State the features of mobile satellite
Important 10 Mark Questions
1. (a) Briefly explain Kepler’s I,II & III laws
(b) Explain LEO & MEO
2. (a) Explain the different types of orbits used in satellite communications
(b) With the diagram explain attitude control in satellites’
3. (a) Briefly explain geostationary orbit
(b) With a block diagram explain the operation of microwaves link repeater
4. (a) Explain apogee and perigee with diagram
(b) Explain MSAT
5. (a) Explain active and passive satellites
(b) Briefly explain GTS system
6. (a) Write notes on earth eclipse of satellite
(b) With the block diagram explain transmit receive earth station
7. (a) Explain parabolic reflector antenna
(b) Briefly explain launching orbits
8. (a) Explain Cassegrain antenna
(b) Explain TT & C subsystems
9. (a) Explain station keeping in satellites
(b) Explain the operation of microwaves transmitter with block diagram
10. (a) Explain the operative of transponder’
(b) Explain travelling wave tube with diagram
11. (a) With diagram explain parametric amplifier
(b) Explain attitude control
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