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a short note about radar communication
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RADAR-Radio Detection And Ranging
Electromagnetic Waves
Microwave frequency band
Before world war-II
Target
Detection Result
No No correct
Yes Yes Correct
Yes No Error
No Yes Error( False Alarm )
R=c*Tp/2 (meters)
Where,
R = range to target(meters)
Tp = round-trip propagation time(seconds)
c = the propagation velocity(m/s)
Enforcing speed limits
Collisions