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GAIN CORRECTION [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2026-02-27

English

Subject field(s)
  • Ultrasonography
  • Radiological Physics (Theory and Application)
  • Acoustics (Physics)
CONT

A way to overcome ultrasound attenuation is time gain compensation(TGC), in which signal gain is increased as time passes from the emitted wave pulse. This correction makes equally echogenic tissues look the same even if they are located in different depths.

Key term(s)
  • time-gain compensation
  • time-gain control

French

Domaine(s)
  • Ultrasonographie
  • Physique radiologique et applications
  • Acoustique (Physique)
CONT

Le gain étagé correspond à l'amplification de la captation par la sonde des ultrasons réfléchis sur des zones étagées, avec une intensité d'émission inchangée. Sur l'écran, cela se traduit par l'ajustement de la brillance de l'image sur une profondeur donnée.

Spanish

Save record 1

Record 2 2007-01-31

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Remote Sensing
DEF

[An application that] performs a radiometric balancing on synthetic aperture radar data to compensate for non-uniform illumination in the range direction due to the antenna pattern.

CONT

Antenna pattern correction. The brightness of the image is affected by the antenna gain variation where the near range will receive maximum power while the far range will receive minimum power. This effect produces an image that varies in intensity(tone) along the range direction across the image. The antenna pattern effect is expressed as the energy returned to the radar and decreases dramatically as the range distance increases. Antenna pattern correction is applied to produce a uniform average brightness across the imaged swath.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Télédétection
DEF

Application qui exécute un équilibrage radiométrique des données d'un radar à synthèse d'ouverture pour compenser l'éclairement non uniforme dans la direction de portée causé par le diagramme d'antenne.

CONT

Application des corrections radiométriques suivantes, si nécessaire: correction du diagramme d'antenne; correction de la chute de gain en distance radiale [...]

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Teledetección
Save record 2

Record 3 2006-05-01

English

Subject field(s)
  • Spacecraft
CONT

As a result of measurements with the on-board calibration subsystem as well as the measurement with the external calibration site, correction, perhaps in the form of look-up tables(to include parameters such as antenna patterns and gain constants) will be generated and utilized in the ground processor.

OBS

on-board calibration subsystem: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

Key term(s)
  • on board calibration subsystem
  • on board calibration sub-system
  • on-board calibration sub-system
  • onboard calibration subsystem
  • onboard calibration sub-system

French

Domaine(s)
  • Engins spatiaux
CONT

Par suite des mesures effectuées au moyen du sous-système d'étalonnage à bord et des sites d'étalonnage externe, des corrections seront produites et introduites dans les installations de traitement au sol, peut-être sous la forme de tables de recherche (incluant des paramètres comme les diagrammes d'antenne et les constantes de gain).

OBS

sous-système d'étalonnage à bord : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Save record 3

Record 4 2002-02-14

English

Subject field(s)
  • Scientific Measurements and Analyses
CONT

As a result of measurements with the on-board calibration subsystem as well as the measurement with the external calibration site, correction, perhaps in the form of look-up tables(to include parameters such as antenna patterns and gain constants) will be generated and utilized in the ground processor.

French

Domaine(s)
  • Mesures et analyse (Sciences)
CONT

Par suite des mesures effectuées au moyen du sous-système d'étalonnage à bord et des sites d'étalonnage externe, des corrections seront produites et introduites dans les installations de traitement au sol, peut-être sous la forme de tables de recherche (incluant des paramètres comme les diagrammes d'antenne et les constantes de gain).

Spanish

Save record 4

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TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
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