A fixed radar station transmits 100 kW at 3 GHz. The smallest ocean-going ship has a radar cross-section of 200 m2. The radar antenna gain is 16 dB. If detection requires a minimum of 1 nW/m2 at the radar antenna, the effective range of the radar is nearly
A. 7.1 km
B. 8.4 km
C. 70.7 km
D. 84.0 km
Answer: Option B
This Question Belongs to Electronics And Communications Engineering >> Satellite Communication
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