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

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BE - SEMESTER-VII (NEW) EXAMINATION — WINTER 2018

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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.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. MARKS

   1. List the types of Orbits used in the Satellite and give its Comparison. 03
   2. Explain Elevation angle and Azimuth angle Calculation with necessary Equation. 04

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   3. What is Satellite communication? Draw and Explain the block diagram of Satellite Communication in detail. 07
2. 1. Write short notes on Satellite Antennas. 03
   2. Write a Short note on Telemetry, Tracking and Command in Satellite Communication. 04
   3. What are Kepler’s three laws of planetary motion? Give the mathematical formulation of Kepler’s third law of planetary motion. 07

      OR

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   4. 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
3. 1. Write a short note on Receive-Only Home TV Systems. 03
   2. With Necessary Equation and Diagram, Explain Limits of Visibility. 04

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   3. Explain the block diagram of Satellite Transponder. Also explain the frequency reuse technique for Transponder. 07

      OR

   4. Derive Friis transmission Equation for-réceived power in Radio link. 03
   5. Write a Short note on Polarization of Satellite Signals. 04
   6. List various types of Control required to maintain the satellite in space and Explain any one in detail. 07

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4. 1. Discuss Antenna Misalignment Losses. 03
   2. Explain Solar Eclipse of satellite and Sun Transit Outage. 04
   3. Compare FDMA; TDMA and CDMA techniques. 07

      OR

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   4. What is XPD and How XPD is predicted? 03
   5. Discuss three-axis method of Satellite Stabilization. 04
   6. Explain How to Compute Uplink and Downlink C/N Ratio for a typical Satellite Link. 07
5. 1. Define Input Back-off and Output Back-off. 03

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   2. What do you mean by rain attenuation? Explain with necessary Equation. 04
   3. Write a short note on ATM in Satellite Communication. 07

      OR

   4. List the advantage and disadvantage of TDMA. 03
   5. Calculate overall C/Ny for uplink and downlink C/Nj ratio of 46 dB. 04

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   6. Write a short note on Satellite Link and TCP. 07

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