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GAIN NOISE TEMPERATURE RATIO ANTENNA [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2000-07-19

English

Subject field(s)
  • Telecommunications
  • Air Transport
DEF

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.

OBS

gain-to-noise temperature ratio: term and definition officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Télécommunications
  • Transport aérien
DEF

Rapport, habituellement exprimé en dBK, entre le gain de l'antenne et le bruit à la sortie du récepteur dans le sous-système d'antennes. Le bruit est exprimé sous la forme de la température à laquelle il faut élever une résistance de 1 ohm pour produire la même densité spectrale de bruit.

OBS

rapport gain/température de bruit : terme et définition uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Telecomunicaciones
  • Transporte aéreo
DEF

Relación, habitualmente expresada en dBK, entre la ganancia de antena y el ruido en la salida del receptor del subsistema de antena. El ruido se expresa como la temperatura a la que debe elevarse una resistencia de un ohmio para producir la misma densidad de potencia de ruido.

OBS

relación de ganancia a temperatura de ruido : término y definición aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).

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Record 2 1994-12-13

English

Subject field(s)
  • Computers and Calculators
  • Applications of Automation
  • Telecommunications Facilities

French

Domaine(s)
  • Ordinateurs et calculateurs
  • Automatisation et applications
  • Installations de télécommunications
OBS

Acronyme spécifique à RADARSAT accepté par le Comité d'uniformisation de la terminologie spatiale.

Spanish

Save record 2

Record 3 1987-07-31

English

Subject field(s)
  • Radio Transmission and Reception
  • Satellite Telecommunications
DEF

An antenna performance parameter equaling the antenna gain G divided by the antenna noise temperature T, measured at the antenna terminals. It can be expressed as a ratio, M=G/T.

OBS

For satellite earth stations receiving systems, a figure of merit that equals G/T, where G is the gain in decibels of the earth station antenna at the receiving frequency and T is the equivalent noise temperature in kelvins of the receiving system.

French

Domaine(s)
  • Émission et réception radio
  • Télécommunications par satellite
DEF

Quotient du gain G d'une antenne par sa température de bruit T.

Spanish

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