Download AKTU B-Tech 8th Sem 2014-15 EEC 035 Introduction To Radar Systems 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 035 Introduction To Radar Systems Question Paper

Printed Pages : 3
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(Following Paper ID and Roll N o. to be ?lled in your Answer Book)
PAPER ID :131855 '
Roll No.
B.Tech
(SEM. VIII) THEORY EXANIINATION 2014-15
INTRODUCTION TO RADAR SYSTEMS
Tune : 3 Hours] [Total Marks : 100
Note: Attempt all the questions. Each question carries equal marks.
1 Attempt any four parts of the following : 5x4=20
(a) What are the basic functions of Radar?
(b) Derive radar range equation.
(0) What is Doppler Effect and how it is useful in
long distance connmmication. '
(d) Write short notes on PRF and its signi?cance.
(e) De?ne radar cross-section. Describe brie?y some
of the factors governing the relation between the
radar cross-section of a target and its true cross-
section
" (D Show that the maximum range of radar operating
at a given frequency is proportional to the linear
dimension of antenna.
131855] 1 [ Contd...

2 Attempt any four parts of the following : 5x4=20
a) Draw the block diagram and explain the operation
of CW radar using zero interinediate frequency
in the receiver.
b) How have the draw backs of the radar been
overcome?
c) Explain what is meant by the term BLIND
SPEED in MTI radar. Under what condition
could this be an embarrassment?
d) What is the method of overcoming the problems
of blind speed in radar?
e) If two MTI radar system are operating at same
' prf but with different operating frequencies with
second in blind speed of one radar is equal to
fourth blind speed of the other radar, then ?nd
the ratio of their operating frequency.
f) Describe Matched ?lter for pulse burst waveform.
3 Attempt any two parts of the following : 1012=20
a) What do you understand by Tracking with radar?
Explain Mono pulse - tracking in detail.
' b) Describe with aid of sketch, the conical seaming
method of tracking an acquired targethow is the
improvement over Lobe switching?
- c) What do you mean by Acquisition of a Target
m?acplain?wva?ousmethodofar?mm?ng
131855] 2 [ Contd...
Attempt any two pans of the following : 1012=20
a) What do you understand by Coherent, Non '
coherent and Binary integration? Discuss non
coherent integration of non-?uctuating Targets.
b) What are the di?erent types of detection used in
Radar? Explain zero-crossing detector with
dhgnmm
c) Write a short note on detection of signal in noise.
Attempt any two parts of the following : 10;2=20
a) Explain the following terms:
i. Range Measurement '
ii. Range Accuracy
iii Range Ambiguity
' iv. Range Rate
b) What do you mean by Radar clutter? Explain
various type of radar clutters. How they affect
the performance of radar?
c) What is Ambiguity Function? Discuss the
Ambiguity function of a simple pulse.
. 3 [7550]
131855]