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Posted By: ram Member Level: Diamond Posted Date: 03 Sep 2008
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2006 Jawaharlal Nehru Technological University Electronics & Communications Engineering IV B.Tech. II Semester Regular Examinations, April/May -2006 RADAR ENGINEERING Question paper
Code No: RR420402 Set No. 2
IV B.Tech II Semester Regular Examinations, Apr/May 2006
RADAR ENGINEERING
(Electronics & Communication Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Derive the basic Radar equation.
(b) What are the problems and limitations in the prediction of radar range.
(c) Discuss about detection of signals in noice. [6+5+5]
2. (a) What is meant by minimum detectable signal in Radar? Discuss the effect of
integration of Radar pulses.
(b) Discuss the factors affecting the PRF and range of a Radar. [10+6]
3. (a) Explain the operation of side band superheterodyne type CW Doppler Radar
with block diagram.
(b) Explain how the noise signals are limiting the performance of FM altimeter.
[8+8]
4. (a) Draw and explain frequency-response characteristics of an MTI using range
gates and filters.
(b) What is the difference between MTI radar using range gates and an MTI with
a single-delay-line canceler. [8+8]
5. Explain the following limitations of MTI radar.
(a) Equipment instabilities.
(b) Scanning modulation.
(c) Internal fluctuation of clutter. [5+5+6]
6. (a) Compare the tracking techniques.
(b) Explain in detail about limitations to tracking accuracy. [10+6]
7. (a) Explain various types of radar displays.
(b) Write notes on feed illumination angle, feed support, and f/d ratio with refer-
ence to radar antennas. [8+8]
8. (a) Explain the characteristics of a matched filter receiver, with necessary equa-
tions.
(b) Write notes on: Noise jamming, Repeater jamming.
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