A monostatic pulsed radar operating at 30GHz has a transmitter with 2KW O/P power and an antenna with 30dB gain. Minimum detectable signal in the receiver is —100 dBm.
Determine the maximum rangeofthe radar, if it is required to detect a target having radar cross section of 10sq.m (consider $$\log_{10} 4 \pi = 1.1$$). Assume EM wave propagate under ideal conditions.

A

10 km

B

21.5 km

C

56 km

D

100 km