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Radar Range Equation
Skolnik — Radar Fundamentals and Detection Range
Transmitter
Peak Power P
t
(kW)
10
Antenna Gain G (dBi)
30
Frequency (GHz)
10
Target
RCS σ (m²)
1
Range (km)
50
Receiver
Noise Figure F (dB)
4
Bandwidth B (MHz)
1
System Losses L (dB)
5
Required SNR (dB)
13
Results
SNR at range
—
Max range R
max
—
Detection?
—
Radar Range Equation
SNR = P
t
G²λ²σ / ((4π)³R&sup4;kT
0
BFL)
R
4
law:
Doubling range reduces SNR by 12 dB!