STUPIDSID
Solve any five question from Q.1(a,b,c,d,e,f,g)
1(a)
Why the 'Earth sensors' are not used for sensing the 'Yaw' axis in GEO satellites?
4 M
1(b)
Why a multi-beam antenna is used in satellite communication?
4 M
1(c)
For the same area of solar array which configuration spin stabilization or body stabilization, generate more power. Justify.
4 M
1(d)
Differentiate between window & frame organization.
4 M
1(e)
Why LNA in a satellite receiving system is placed at the antenna end of the feeder cable?
4 M
1(f)
Explain with diagram what is "Umbra" and "penumbra"? How it is affecting satellite operation?
4 M
2(a)
What are the different antenna tracking techniques of geostationary satellite?
10 M
2(b)
Discuss in detail Telemetry, tracking and command with necessary block diagram.
10 M
3(a)
What are the main consideration in the design of an earth station? And how the earth stations are classified?
10 M
3(b)
Explain the need of placing LNA next to Antenna, Calculate over all C/N Ratio for satellite if [C/N], uplink = 25db & [C/N], downlink = 20 db Intermodulation Noise =12db
10 M
4(a)
Discuss Design Consideration of Earth station, Draw the block diagram for Transmit and receive earth station and explain.
10 M
4(b)
Compare Pre assigned FDMA and Demand assigned FDMA.
5 M
4(c)
Explain TDMA frame structure.
5 M
5(a)
Explain on board connectivity with Transparent processing.
5 M
5(b)
Discuss OST Model for satellites Network also discuss layering principle.
5 M
5(c)
Why TWT amplifier is Preferred for satellite communication?
5 M
Solve any five question from Q.1(a, b, c,d,e)
6(a)
Optical satellite Transmitter and receiver
5 M
6(b)
Comparison of DS-CDMA, FH-CDMA and TH-CDMA.
5 M
6(c)
Launching Mechanism
5 M
6(d)
Reliablity and space qualification test
5 M
6(e)
VSAT
5 M
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