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What is the gain required by a weather radar antenna?(a) 65 dB(b) 50 dB(c) 25 dB(d) 5 dBI got this question in an interview for internship.This intriguing question originated from Traffic Alert, Collision Avoidance System & Weather Radar topic in chapter Surveillance Systems, Mapping and Multimode Radars of Avionics

Answer»

Right OPTION is (c) 25 dB

Easiest explanation: The signal STRENGTH of ECHOES from storms located at a distance from the aircraft is very low, which requires the transmitter to OPERATE at very high power levels and that the antenna have a gain of more than 25 dB.



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