Download GTU BE/B.Tech 2019 Summer 7th Sem Old 171007 Satellite Communication Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 7th Sem Old 171007 Satellite Communication Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (OLD) EXAMINATION ? SUMMER 2019
Subject Code: 171007 Date: 10/05/2019

Subject Name:Satellite Communication

Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) State the advantages and disadvantages of Satellite Communication. 07
(b) State Kepler?s laws of planetary motion 07

Q.2 (a) Define Apogee and Perigee and locate the same on an elliptical orbit. A satellite
is in an elliptical orbit with a perigee of 1000 km and an apogee of 4000 km.
Evaluate the semi major axis, Time period of oscillation, Time in HH:MM:SS
format, linear velocity at apogee and perigee both, and angular velocity.
07
(b) Write a short note on Satellite antennas. 07
OR
(b) Explain Kepler?s six element set that helps to locate a satellite in orbit. 07

Q.3 (a) Explain with the help of a diagram the Eccentric anomaly. Also derive its relation
with mean anomaly using Perigee as the point of reference.
07
(b) How orbital perturbations play a significant role in satellite communication? 07
OR
Q.3 (a) What are the different anomalies for satellite communication? Describe. 07
(b) Write a short note on azimuthal and elevation angle. 07

Q.4 (a) Write a short note on TTC & M. 07
(b) Explain the simplified double bend conversion transponder for 14/11 Ghz band. 07
OR
Q.4 (a) Explain the different types of stabilization techniques using examples. 07
(b) What is the significance of a transponder in a satellite system? 07

Q.5 (a) Write a short note on Satellite Antennas. 07
(b) Explain polarization. What kind of polarization is observed in satellite systems? 07
OR

Q.5 (a) Explain about the working of the VSAT network. 07
(b) How does a GPS system work? 07





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