Radar –what it was

Radar –what it was
Short (e.g. 50 ns) powerful pulses (up to 1 GW EIRP) to get range => signal BW up to 20 MHz
=> distance-resolution cell 150m (w/o FM)
Regular pulse patterns – purposeful chosen
Band spread techniques by FM (chirp)
LOS
Frequencies ~1 GHz .. 18 GHz (rarely to 40 GHz)
Frequency agility rarely used
TWT, e.g. average power 45W => 90 MW peek power
3' to 12' Antennas with 3dB width of 0.5 .. 2°