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Study of Radar System PPT

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PPT for Study of Radar system + Bharat Electronics Limited

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Study of Radar System PPT

  1. 1. Training report on Industrial training at On the topic:- STUDY OF RADAR SYSTEM Submitted to:- Under:- Mr. Aman Vohra Start Date for Internship:-June 16th 2014 End Date for Internship:-July 26th 2014 Submitted by:- Atul Sharma, B.Tech IV year, ECE Maharaja Agrasen Institute Of Technology, GGSIPU
  2. 2. INTRODUCTION  RADAR is an acronym for RAdio Detecting And Ranging.  First successfully demonstrated in 1936.  It uses electromagnetic waves.  It enjoys wide range of application. The World War II RADAR ‘Wurzberg Rise’
  3. 3. Principle Of Working Radar is used to find the • Location, • Distance, • Direction of the target.
  4. 4. Radar Range Equation Rmax = [Pt .G.б.Ae / (4П)2Smin]1/4 G = 4ПAe / λ2 Ae = G.λ2 / 4П Where Smin = Minimum power received Pt = Power transmitted G = antenna gain б = radar cross section of target Ae= effective area Rmax = Maximum Radar Range
  5. 5. Types Of Radar
  6. 6. Primary Radar A Primary Radar transmits high-frequency signals which are reflected at targets. The arisen echoes are received and evaluated. Secondary Radar At these radar sets the target must have a transponder (transmitting responder) on board and this transponder responds to interrogation by transmitting a coded reply signal.
  7. 7. Continuous Wave Radar
  8. 8. Pulse Radar
  9. 9. Classification on the basis of use:
  10. 10. SOME RADAR SETS 3-D surveillance Radar (ROHINI) Low Level Light Weight Radar (ASHLESHA) Low level Light weight Radar(BHARANI) INDRA II
  11. 11. RADAR DEVICES ANTENNA TRANSMITTER RECEIVER RADAR DISPLAY
  12. 12. RADAR ANTENNA An antenna either receives energy from an electromagnetic field or radiates electromagnetic waves produced by a high frequency generator. Parabolic antenna Cassegrain antenna Slot antenna
  13. 13. TRANSMITTER A radar transmitter generates RF- energy Necessary for scanning the free space. RECEIVER The function of the receiver is to take the weak echoes from the antenna system, amplify them sufficiently, detect the pulse envelope, amplify the pulses, and feed them to the indicator.
  14. 14. RADAR DISPLAY A-SCOPE B-SCOPE PLAN-POSITION INDICATOR(PPI)
  15. 15. A-SCOPE Presents only the range to the target and the relative strength of the echo. B-SCOPE It provides a 2-D representation in which horizontal axis represents measurement of azimuth (bearing) and vertical axis represents the measurement of the range.
  16. 16. PLAN-POSTION INDICATOR(PPI) It is an intensity-modulation type display system which indicates both range and azimuthal angle of the target simultaneously in polar coordinate. The distance of the bright spot radiating outward from the centre gives the range or the distance of the target from the radar transmitter while the direction in which the spot deflects at certain instant corresponds to the direction of radar antenna (i.e. target direction) at that instant.
  17. 17. Thank You

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