Download GTU BE/B.Tech 2018 Winter 7th Sem New 2173207 Satellite Communication And Networking Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem New 2173207 Satellite Communication And Networking Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2173207 Date: 19/11/2018

Subject Name: Satellite Communication & Networking

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) List the types of Orbits used in the Satellite and give its Comparison. 03
(b) Explain Elevation angle and Azimuth angle Calculation with necessary
Equation.
04
(c) What is Satellite communication? Draw and Explain the block diagram of
Satellite Communication in detail.
07

Q.2 (a) Write short notes on Satellite Antennas. 03
(b) Write a Short note on Telemetry, Tracking and Command in Satellite
Communication.
04
(c) What are Kepler?s three laws of planetary motion? Give the mathematical
formulation of Kepler?s third law of planetary motion.
07
OR
(c) A satellite in an elliptical orbit around the earth has an apogee of 39,152 km
and a perigee of 500 km. What is the orbital period of the satellite? Average
earth radius is 6,378.137 km.
07

Q.3 (a) Write a short note on Receive-Only Home TV Systems. 03
(b) With Necessary Equation and Diagram, Explain Limits of Visibility. 04
(c) Explain the block diagram of Satellite Transponder. Also explain the frequency
reuse technique for Transponder.
07
OR
Q.3 (a) Derive Friis transmission Equation for received power in Radio link. 03
(b) Write a Short note on Polarization of Satellite Signals. 04
(c) List various types of Control required to maintain the satellite in space and
Explain any one in detail.
07

Q.4 (a) Discuss Antenna Misalignment Losses. 03
(b) Explain Solar Eclipse of satellite and Sun Transit Outage. 04
(c) Compare FDMA, TDMA and CDMA techniques. 07

OR
Q.4 (a) What is XPD and How XPD is predicted? 03
(b) Discuss three-axis method of Satellite Stabilization. 04
(c) Explain How to Compute Uplink and Downlink C/N Ratio for a typical
Satellite Link.
07

Q.5 (a) Define Input Back-off and Output Back-off. 03
(b) What do you mean by rain attenuation? Explain with necessary Equation. 04
(c) Write a short note on ATM in Satellite Communication. 07
OR

Q.5 (a) List the advantage and disadvantage of TDMA. 03
(b) Calculate overall C/N0 for uplink and downlink C/N0 ratio of 46 dB. 04
(c) Write a short note on Satellite Link and TCP. 07
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