TERMIUM Plus®

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INPUT OPTICS [4 records]

Record 1 2024-01-27

English

Subject field(s)
  • Lasers and Masers
  • Optical Telecommunications
  • Optics

French

Domaine(s)
  • Masers et lasers
  • Télécommunications optiques
  • Optique

Spanish

Save record 1

Record 2 2007-01-31

English

Subject field(s)
  • Geophysics
  • Atmospheric Physics
DEF

The radiant flux per unit solid angle per unit of projected area of the source in the atmosphere.

CONT

The atmospheric radiance is collected by the front-end optics(mainly steering mirrors and a telescope) and directed to the Michelson interferometer which allows to measure broadband spectra with a very good spectral resolution. The second input port to the interferometer is closed with a cold blackbody to suppress disturbing radiance.

French

Domaine(s)
  • Géophysique
  • Physique de l'atmosphère
DEF

Flux émis par unité de surface projetée et par unité d'angle solide de la source dans l'atmosphère.

CONT

La radiance marine étant obtenue par soustraction de la radiance atmosphérique de la radiance totale, une surestimation de la composante atmosphérique a pour effet de sous-estimer la radiance marine ; ce qui est particulièrement apparent aux courtes longueurs d'onde.

Spanish

Campo(s) temático(s)
  • Geofísica
  • Física de la atmósfera
Save record 2

Record 3 2002-03-25

English

Subject field(s)
  • Remote Sensing
DEF

Final stage of data processing, generally after the image classification.

CONT

The image processing toolbox provides reference-standard algorithms for pre-and post-processing tasks that solve frequent system problems, such as interfering noise, low dynamic range, out-of-focus optics, and the difference in color representation between input and output devices.

OBS

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

French

Domaine(s)
  • Télédétection
DEF

Dernière étape du traitement de données qui soit la classification d'image.

CONT

Le pré-traitement concerne les images acquises tandis que le post-traitement concerne les images traitées. Dans les deux cas, les images ne peuvent échapper aux effets de dégradations dus essentiellement aux phénomènes physiques tels : la diffraction (déviation) du système optique [;] l le flou dû au mouvement de l'image durant son acquisition. Pour pallier à ces dégradations on utilise en général le filtrage.

OBS

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

Spanish

Save record 3

Record 4 1989-03-14

English

Subject field(s)
  • Electrical Convertors
  • Non-Lethal Weapons
  • Optics
OBS

All thermal imagers are simply wavelength converters and the optics section contains the input and output, i. e. an infrared lens assembly at the front and a visible display at the rear.

French

Domaine(s)
  • Convertisseurs (Électrotechnique)
  • Armes non meurtrières
  • Optique
OBS

Un schéma synoptique de cet appareil fourni dans la source mentionnée ci-dessus.

Spanish

Save record 4

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