Q.1
14 Marks(a)
(
1)Radar is an acronym of ____________.
2)Define Echo signal in Radar
3)Define Range of Radar.
(b)
List down the types of Radar. Explain any one.
(c)
Derive the simple form of radar range equation.
Gujarat Technological UniversitySummer 2025 examination
GTU 3171110 Radar and Navigational Aids Summer 2025 Question Paper & PDF
B.E. · EC Engineering · Semester 7 · Subject code 3171110
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Define Navigation, Celestial Navigation, Radio Navigation
(b)
Write a brief note on Doppler Effect.
(c)
Explain the working of FMCW Radar with the help of block diagram.
OR
(c)
Using a block diagram, describe the operation of a Simple CW Radar and a CW Radar with IF amplification.
Q.3
14 Marks(a)
What are the drawbacks and applications of CW Radar.
(b)
Explain Blind Speed. How you can avoid it?
(c)
Using a block diagram with delay line canceller, explain MTI Radar.
OR
(a)
A MTI radar is operating at a PRF of 1 KHz, find the lowest blind speed, if it is operating at 2 cm wavelengths.
(b)
Briefly describe sequential lobbing.
(c)
Explain the working of mono pulse radar with the help of a block diagram.
Q.4
14 Marks(a)
Using simple block diagram, explain Radar transmitter.
(b)
Write a brief note on conical scanning
(c)
What are the different types of Radar display? Explain PPI scope.
OR
(a)
List down different types of Radar antennas. Give brief idea about half wave antenna.
(b)
Explain Pilotage in navigation.
(c)
Explain the principle of Phased array for electronic scanning. Give the advantages of electronic scanning.
Q.5
14 Marks(a)
How radio range signals are received? What is cone of silence?
(b)
Define the purpose of VOR in navigation.
(c)
Explain the working of loop antenna as a direction finder and enumerate the error occurs in direction finding.
OR
(a)
Define Glide slope, Localiser, and outer marker in ILS.
(b)
Explain briefly the principle of hyperbolic electronic navigation system.
(c)
Write a short note on Global Positioning system.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Radar and Navigational Aids (Summer 2025, B.E. · EC Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.