KANPUR INSTITUTE OF TECHNOLOGY

ODD SEM EXAM, Pre-University Test,AY: 2024-25 PROGRAM :B.Tech ROLL NO :

SUBJECT CODE :BEC061 BRANCH : EC SECTION: A
SUBJECT NAME : Stellite Communication SEMESTER :6 FACULTY NAME :Kaushal Kishor

Time: 180 Minutes Total Marks: 70

Note: Attempt all Sections
ASSESSMENT OF CO:1
SECTION - A
Each Question Carry 01 marks 01x01 =01
Q. No.1 Attempt All Questions BL
a. What are the main advantages of satellite communication technologies? 2
SECTION - B
Each Question Carry 03 marks 03×02=06
Q. No. 2 Attempt Any Two Questions BL
a. Write the advantages and disadvantages of satellite communication 3
b. Discuss various satellite orbits. 3
c. Explain geo-synchronous and geo-stationary satellites. 4
SECTION - C
Each Question Carry 7 marks 07×01=07
Q. No. 3 Attempt Any One Question BL
a. Discuss the application of satellite communication. 2
b. Discuss satellite life phases and space debaris. 3

ASSESSMENT OF CO:2
SECTION - A
Each Question Carry 01 marks 01x01 =01
Q. No.1 Attempt All Questions BL
a. What are the various orbital effects? 2
SECTION - B
Each Question Carry 03 marks 03×02=6
Q. No. 2 Attempt Any Two Questions BL
a. Define look angle and azimuth angle. 4
b. What are Rain and Cloud effects in Satellite Communication? 4
c. Define apogee and perigee. 3
SECTION - C
Each Question Carry 7 marks 07×01=07
Q. No. 3 Attempt Any One Question BL
a. Explain the Kepler’s laws of Planetary Motion. Explain ascending node and descending node of a 4
satellite.
b. What are Orbit perturbations? Explain the significance of G/T ratio of an earth station. 4

ASSESSMENT OF CO:3
SECTION - A
Each Question Carry 01 marks 01x01 =01
Q. No.1 Attempt All Questions BL
a. What is an EIRP? 2
SECTION - B
Each Question Carry 03 marks 03×02=06
Q. No. 2 Attempt Any Two Questions BL
a. An amplifier has a quoted noise figure of 2.5 dB. What is its equivalent noise temperature? 3
b. Discuss in detail the factors that affect the uplink design and the downlink design in geostationary 4
satellites?
c. Write the seven segments of satellite communication. 3
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 SECTION - C
Each Question Carry 7 marks 07×01=07
Q. No. 3 Attempt Any One Question BL
a. Explain TTCM with the help of block diagram. 3
b. Write the advantages and disadvantages of geostationary orbit. A satellite moving in a highly 4
eccentric Molniya orbit having the farthest and the closest points as 35000km and 500km
respectively from the surface of the earth. Determine the orbital time period and the velocity at
the apogee and perigee points.

ASSESSMENT OF CO:4
SECTION - A
Each Question Carry 01 marks 01x01 =01
Q. No.1 Attempt All Questions BL
a. What is timing accuracy? 3
SECTION - B
Each Question Carry 03 marks 03×02=06
Q. No. 2 Attempt Any Two Questions BL
a. Derive the expression for C/N ratio. A satellite TV signal occupies the full 36 MHz transponder 5
bandwidth and is desired to provide a C/N ratio of 22dB at the earth station. If the downlink
frequency is 4GHz and the other losses amount to 3.4dB, what must be the G/T of the earth station
if GRP is 37dBW. The path length is 40000km. (Boltzman’s constant K=1.38×10-23 J/K).
b. Discuss about GPS principle. 4
c. Explain the working principle of VSAT. 3
SECTION - C
Each Question Carry 7 marks 07×01=07
Q. No. 3 Attempt Any One Question BL
a. What are the various antennas used in satellite communication? 4
b. Explain DBS-TV system design. Also discuss about DBS-TV link budget. 3

ASSESSMENT OF CO:5
SECTION - A
Each Question Carry 01 marks 01x01 =01
Q. No.1 Attempt All Questions BL
a. What is advanced technology vehicle? 3
SECTION - B
Each Question Carry 03 marks 03×02=06
Q. No. 2 Attempt Any Two Questions BL
a. Explain (i) The power supply subsystem (ii) Thermal control subsystem 4
b. Discuss the control and decision making for space. 3

c. Discuss advanced launching technology space X. 4

SECTION - C
Each Question Carry 7 marks 07×01=07
Q. No. 3 Attempt Any One Question BL
a. What is launch vehicle? Describe various types of launch vehicles. 4
b. Write note on (i) PSLV (ii) GSLV 3

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