5. A bi-static radar has identical antennas at 35 GHz which have gain of 30 dB. Radar

parameters include:

e

P= 50 kW

BN = 12 MHz

(Sr/Nr) = 20

Tsys = 425 K

LTotal 2.8

R1 = 1.63-R2

k=1.38x10-23 J/K

Assume a target with a radar cross section of 5 m². What are the target ranges R1 and R2?