Gain-to-noise temperature ratio
urn:aero:airm:1.0.0:ContextualModel:ATMBusinessTerms:Gain-to-noise_temperature_ratio
The ratio, usually expressed in dB/K, of the antenna gain to the noise at the receiver output of the antenna subsystem. The noise is expressed as the temperature that a 1 ohm resistor must be raised to produce the same noise power density.
Source:
ICAO