SRM University 2007 B.Tech Electronics and Communications Engineering Bank : Radar Systems and Navigational Aids - Question Paper

S.R.M. Institute of Science & Technology
Deemed University

School of Electronics & Communication Engineering
ques. Bank
Subject Code : EC461
Subject Name : Radar Systems and Navigational Aids
Year & Sem : IV Year B.Tech (ECE) ,7th Sem.

Unit-I – Radar formula
Part-A
1. What is Radar?
2. What is 2nd time around echoes?
3. What is maximum unambiguous range?
4. What is meant by pulse compression?
5. Draw the block diagram for pulse radar.
6. Define maximum radar range &Write the simple radar range formula.
7. Mention the a few applications of radar.
8. What is meant by minimum detectable signal?
9. What is meant by integration of radar pulses?
10. What is meant by predetection &post detection integration?
11. Define radar cross part of targets()
12. What is transmitted power?
13. Define pulse repetition frequency.
14. What is meant by multiple time around echoes?
15. What is plumbing loss?
16. What is beam shape loss& limiting loss?
17. What is collapsing loss?
18. What is operator loss &field degradation?
19. What is the effect of non free space propagation?
20. What is meant by super refraction?
21. What is PPI& A-scope display?



PART -B
1. Explain the operation of pulse radar with a block diagram.
2. Derive the radar range formula.
3. Explain minimum detectable signal &receiver noise.
4. Write short notes on: Radar cross part of targets
5. Write short notes on a) cross part fluctuations b) transmitter power
6. Explain in detail about pulse repetition frequency and range ambuities
7. Explain in detail about system losses and propagation effects

UNIT II - CW AND FM CW RADAR
PART A
1. What is Doppler effect
2. What is CW radar
3. Draw the block diagram of CW radar
4. What is clutter
5. What are the limitations of power leakage in a transmitter
6. What is intermediate frequency receiver
7. what are the applications of CW radar
8. What is FM CW radar
9. What is FM CW altimeter
10. What is multiple frequency CW radar
11. What is tellurometer
12. What is MTI radar
13. Explain butterfly effect
14. What is meant by delay line cancellers
15. Define blind speed
16. What is range gating
17. Write down the limitations MTI performances
18. What is meant by noncoherent MTI
19. Define pulse Doppler radar
20. Define Tracking radar
21. Distinguish ranging from a continuous tracking radar and track while scan radar
22. What is meant by sequential lobing
23. What is conical scanning
24. Define squist angle
25. Write briefly about monopulse tracking radar
PART B
1. Draw and discuss about simple CW radar
2. Explain in detail about FM CW radar with a block diagram
3. Explain with a block diagram of FM CW altimeter
4. Explain MTI radar with a block diagram
5. Write short notes on delay line canceler

Earning:   Approval pending.