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external calibration [1 record]

Record 1 2005-11-14

English

Subject field(s)
  • Remote Sensing
DEF

Absolute gain calibration of the ASAR [Advanced Synthetic Aperture Radar] using ground calibration transponders.

CONT

External calibration is the derivation of corrections through comparison with independent references. Instrument operations over calibration sites with natural or man-made targets of known parameters (e.g. location, backscatter coefficient) provide the necessary references within the instrument data.

OBS

external calibration: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télédétection
DEF

Gain d'étalonnage absolu de l'ASAR (radar à synthèse d'ouverture de pointe) obtenu grâce aux transpondeurs d'étalonnage au sol.

CONT

Cette méthode d'étalonnage prévoira un étalonnage interne (c'est-à-dire à bord du satellite), un étalonnage externe et l'introduction de corrections dans les installations de traitement au sol.

OBS

étalonnage externe : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

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