1. (a) Describe and distinguish between the di erent types of ECM directed against
a radar.
(b) Discuss the relations between the matched lter characteristics and correlation
function. [8+8]
2. (a) Compare the tracking techniques.
(b) Explain in detail about limitations to tracking accuracy. [10+6]
3. (a) Discuss in detail the choice of various parameters that are a ecting the Radar
range.
(b) Bring out the restrictions on the selection of pulse repetition frequency in
Radar operations. How are they adjusted for various range requirements?
[8+8]
4. (a) Explain the principle of functioning and characteristics of a branch type du-
plexer.
(b) Explain the characteristics of a mixer unit in radar receivers. [8+8]
5. (a) Explain with diagram how Doppler direction is measured by Synchronous
motor in CW Radar. List its applications.
(b) Explain how the noise is a ecting the performance of CW Radar with zero IF
and explain how that e ect is overcome in CW Radar with non zero IF. [8+8]
6. (a) Description of Range gate Doppler lters.
(b) Di erentiate blind phases from blind speeds.
(c) Discuss the application of electrostatic storage tubes in MTI radar. [6+5+5]
7. (a) Describe a pulsed Radar system. Discuss how the direction and range of an
object is determined using this system.
(b) Discuss about the frequencies used for radar. [10+6]
8. Distinguish the principle of operation of a simple pulse radar from a simple CW
radar. Explain the di erence with neat schematic block diagrams. [16]
********
1. (a) Describe and distinguish between the di erent types of ECM directed against
a radar.
(b) Discuss the relations between the matched lter characteristics and correlation
function. [8+8]
2. (a) Description of Range gate Doppler lters.
(b) Di erentiate blind phases from blind speeds.
(c) Discuss the application of electrostatic storage tubes in MTI radar. [6+5+5]
3. (a) Explain with diagram how Doppler direction is measured by Synchronous
motor in CW Radar. List its applications.
(b) Explain how the noise is a ecting the performance of CW Radar with zero IF
and explain how that e ect is overcome in CW Radar with non zero IF. [8+8]
4. Distinguish the principle of operation of a simple pulse radar from a simple CW
radar. Explain the di erence with neat schematic block diagrams. [16]
5. (a) Describe a pulsed Radar system. Discuss how the direction and range of an
object is determined using this system.
(b) Discuss about the frequencies used for radar. [10+6]
6. (a) Discuss in detail the choice of various parameters that are a ecting the Radar
range.
(b) Bring out the restrictions on the selection of pulse repetition frequency in
Radar operations. How are they adjusted for various range requirements?
[8+8]
7. (a) Compare the tracking techniques.
(b) Explain in detail about limitations to tracking accuracy. [10+6]
8. (a) Explain the principle of functioning and characteristics of a branch type du-
plexer.
(b) Explain the characteristics of a mixer unit in radar receivers. [8+8]
********
1. (a) Explain with diagram how Doppler direction is measured by Synchronous
motor in CW Radar. List its applications.
(b) Explain how the noise is a ecting the performance of CW Radar with zero IF
and explain how that e ect is overcome in CW Radar with non zero IF. [8+8]
2. (a) Description of Range gate Doppler lters.
(b) Di erentiate blind phases from blind speeds.
(c) Discuss the application of electrostatic storage tubes in MTI radar. [6+5+5]
3. (a) Describe a pulsed Radar system. Discuss how the direction and range of an
object is determined using this system.
(b) Discuss about the frequencies used for radar. [10+6]
4. (a) Explain the principle of functioning and characteristics of a branch type du-
plexer.
(b) Explain the characteristics of a mixer unit in radar receivers. [8+8]
5. (a) Compare the tracking techniques.
(b) Explain in detail about limitations to tracking accuracy. [10+6]
6. (a) Describe and distinguish between the di erent types of ECM directed against
a radar.
(b) Discuss the relations between the matched lter characteristics and correlation
function. [8+8]
7. Distinguish the principle of operation of a simple pulse radar from a simple CW
radar. Explain the di erence with neat schematic block diagrams. [16]
8. (a) Discuss in detail the choice of various parameters that are a ecting the Radar
range.
(b) Bring out the restrictions on the selection of pulse repetition frequency in
Radar operations. How are they adjusted for various range requirements?
[8+8]
********
1. (a) Compare the tracking techniques.
(b) Explain in detail about limitations to tracking accuracy. [10+6]
2. (a) Description of Range gate Doppler lters.
(b) Di erentiate blind phases from blind speeds.
(c) Discuss the application of electrostatic storage tubes in MTI radar. [6+5+5]
3. (a) Describe a pulsed Radar system. Discuss how the direction and range of an
object is determined using this system.
(b) Discuss about the frequencies used for radar. [10+6]
4. (a) Describe and distinguish between the di erent types of ECM directed against
a radar.
(b) Discuss the relations between the matched lter characteristics and correlation
function. [8+8]
5. (a) Explain the principle of functioning and characteristics of a branch type du-
plexer.
(b) Explain the characteristics of a mixer unit in radar receivers. [8+8]
6. (a) Discuss in detail the choice of various parameters that are a ecting the Radar
range.
(b) Bring out the restrictions on the selection of pulse repetition frequency in
Radar operations. How are they adjusted for various range requirements?
[8+8]
7. Distinguish the principle of operation of a simple pulse radar from a simple CW
radar. Explain the di erence with neat schematic block diagrams. [16]
8. (a) Explain with diagram how Doppler direction is measured by Synchronous
motor in CW Radar. List its applications.
(b) Explain how the noise is a ecting the performance of CW Radar with zero IF
and explain how that e ect is overcome in CW Radar with non zero IF. [8+8]
********
1. (a) Derive the Radar range equation.
(b) With a block diagram explain the operation of pulse radar. [6+10]
2. (a) What is false alarm, and probability of detection.
(b) What is Radar Cross section? How does it control the performance of Radar?
[8+8]
3. (a) Explain the operation of CW tracker illuminator of the missile system.
(b) What are the advantages and disadvantages of FMCW Radar over multiple
frequency CW Radar. [8+8]
4. (a) Explain how moving target may be distinguished from stationary targets by
observing the video output on an A - scope.
(b) What are bipolar and uni polar video signals ? Explain. [10+6]
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) Bring out the requirements for duplexers and list out the different types.
(b) Explain the method of measurement of noise figure of a radar receiver. [8+8]
8. Write notes and explain about:
(a) Passive ECM
(b) Matched and non-matched filters
(c) North filter.
(d) Antijamming techniques. [4×4]
***********
Studying past papers are a valuable part of exam preparation and help keep revision focused on important themes whilst practicing exam-style questions. Past exam papers are one of the most helpful tools available to prepare for both internal and external examinations as they provide students with practical insight into how the forthcoming exam paper is likely to look and the key themes or subject areas most likely to be covered. Before starting revision for a subject it is always worth taking time to seek out past papers. Thanks for this article.
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