Introduction Of Radar

1. RADAR
RAdio Detection And Ranging

2. Targets ?
Range ?
•Distance
R

3. How to find out the location of the target?
How to find out the velocity of the target?
• By measuring frequency shift using Doppler effect.

10. TP

11. 1 nmi (nautical mile) = 1.852 Km

13. ----Pulse compression

20. Klystron or TWT or transistor amplifier
Or power osc. Like magnetron
Low power signal
w/g
Mechanically/Electronically
steered planar/phased
array
Scan

21. PPI (plain position indicator)

23. Not necessarily the limits, may use up to 240 GHz (mm wave radar)

26. However it

30. Radar equation becomes

38. integration.

39. Integration methods

40. When to use pre / post detection integration?

61. Typical scan timeApplications
General  10 - 12 sec
long-range military  4 sec
short-range military  1-2 sec
high resolution radars 1 sec

62. Solution
To obtain more
complete coverage