Download AKTU B-Tech 8th Sem 2014-15 EEC 069B Satellite Communication Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 8th Semester (Eight Semester) 2014-15 EEC 069B Satellite Communication Question Paper

Printed Pages : 3
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(Following Paper ID and Roll No. to be ?lled in your Answer Book)
PAPER JD $121854
Roll No.
B. Tech.
(SEM. VIII) THEORY EXAMINATION, 2014-15
SATELLITE COMMUNICATION
Time : 2 Hours] [Total Marks : 60
NOTE : (1) Attempt all questions.
(2) All question carry equal marks.
1 Attempt any four parts of the following : 4X5=_20
(a) Explain Kepler's law of planetary motion. How 1
are these applied to the case of geostationary
satellite?
(b) The apogee and perigee of an elliptical satellite
orbits are 3000Km and 200Km. Determine the
eccentricity, semi-major axis and semi?minor axis.-
(c) The orbital period of a satellite is 650 min.
determine the semi-major axis of the elliptical
01bit.
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2
(d)
(e)
(f)
Attempt any four parts of the following :
G?
(b)-
(C)
(d)
, (e)
(0
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Explain what is meant by geostationaiy orbit.
How do the geostationary orbit and
geosynchronous orbit differ ?
What is advantage of satellite communication over
optical ?ber communication?
The two satellite are moving in different elliptical
orbit with the same perigee but different apogee
. distance the semi-major axis of two orbits are
16_OOOKm and 24000Km. Determine the orbital
period of a satellite 2 if the orbital period? of
satellite 1 is 600 min.
.. Explain how a satellite is placed into a geostationaxy
orbit?
Explain why downlink frequency should be low
than uplink? frequency? ?
Draw the block diagram of satellite communication
system. Explain each part of them.
What is earth sensor and sun sensor?
Explain the'need of Attitude and orbit control in
' satellite?
Determine the average angular velocity of a
satellite moving in an elliptical orbit. If the
semi-major axis is 42164.8 km and orbital
eccentricity is 0.0011 given that G=6.67 x 10?]1
and RA = 5.98 x 1028
2 [?Contd...
?4x5=20
Attempt any two parts of the following :
GO
0))
(C)
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What is look angle? Explain in detail azimuth angle
and elevation angle.
Draw the block diagram of satellite subsystem
Exp?lain power supply system.
An earth station situated in the dockland of
London England needs to calculate the look angle
to a geo?tationary satellite in Indian Ocean operated
by Intelsat. The details of earth station site and
satellite are as follows: Earth station latitude and
longitude are 52.00 and 0? and satellite longitude
longitude (subsatellite point) is 66.0?E.
3 [4675]
2X1(;=20