TERMIUM Plus®

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POSITION TRACKING SYSTEM TRANSMITTER [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2003-02-24

English

Subject field(s)
  • Weather Stations and Meteorological Instruments and Equipment
DEF

An electronic theodolite which determines the direction of a radio transmitter carried by a free balloon in the atmosphere.

CONT

RDF [radio direction finding] systems use a tracking device called a radio theodolite to measure the position of the balloon relative to the ground station. The radio theodolite, which resembles a small tracking radar system, measures the azimuth and elevation angles to the radiosonde relative to the ground station. The radio theodolite automatically follows the motion of the balloon by tracking the primary lobe of the radiosonde's transmitter, making adjustments to the tilt and pointing direction of the antenna as it follows the signal from the sonde.

Key term(s)
  • radio-theodolite

French

Domaine(s)
  • Stations, instruments et équipements météorologiques
DEF

Théodolite électronique qui détermine la direction d'un émetteur radioélectrique emporté par un ballon libre dans l'atmosphère.

CONT

Les mesures en altitude effectuées par les stations de radiosondage sont utilement complétées par des mesures de vent réalisées à l'aide de radar, de radiothéodolites, de procédés optiques, de systèmes de navigation radioélectriques, ou encore de satellites géostationnaires.

Key term(s)
  • radio-théodolite
  • radio théodolite

Spanish

Campo(s) temático(s)
  • Estaciones, instrumentos y equipos meteorológicos
DEF

Teodolito electrónico para determinar la posición en el espacio de un transmisor de radio transportado por un globo libre.

Save record 1

Record 2 1990-09-06

English

Subject field(s)
  • Flight Instruments and Equipment (Aeroindustry)
  • Radio Transmission and Reception

French

Domaine(s)
  • Instruments et équipement de bord (Constructions aéronautiques)
  • Émission et réception radio

Spanish

Save record 2

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