TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

RADAR REFLECTIVITY [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2007-01-31

English

Subject field(s)
  • Space Physics
DEF

In genegral, a measure of the efficiency of a radar target in intercepting and returning radio energy [;] it depends upon the size, shape, aspect, and dielectric properties of the target.

CONT

... some surfaces or objects will reflect much of the in-coming radiation while other surfaces will absorb most of the in-coming radiation. It is these differences in reflectivity that allow us to distinguish different features or conditions in remote sensing imagery. The reflectivity of a surface can be measured for a specific wavelength or for the entire electromagnetic spectrum.

OBS

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

French

Domaine(s)
  • Physique spatiale
DEF

Mesure de l'efficacité d'une cible à intercepter et à renvoyer un signal radar; cette réflectivité dépend de la taille, de la forme, de l'état de la surface et des propriétés diélectriques de la cible.

OBS

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

PHR

Coefficient complexe, signature angulaire de réflectivité.

Spanish

Campo(s) temático(s)
  • Física espacial
Save record 1

Record 2 1998-08-18

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Range Measurements (Telecommunications)
DEF

The fraction of electromagnetic energy generated by a radar installation which is reflected by an object.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Mesures à distance (Télécommunications)

Spanish

Save record 2

Record 3 1992-12-31

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Weather Stations and Meteorological Instruments and Equipment
  • Radar, Radio Guidance and Goniometry
DEF

A measure of the efficiency of a radar target in intercepting and returning radio energy.

OBS

[The] measure ... depends upon the size, shape, aspect and dielectric properties of the surface of the target and includes the effects not only of reflection but also of scattering and diffraction.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Stations, instruments et équipements météorologiques
  • Radar, radioguidage et radiogoniométrie
DEF

Mesure de l'efficacité avec laquelle une cible radar intercepte et renvoie l'énergie radioélectrique.

OBS

[La] mesure [...] dépend de la taille, de la forme, du coefficient d'aspect et des propriétés diélectriques de la surface de la cible et comprend non seulement les effets de réflexion mais aussi ceux de diffusion et de diffraction.

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Estaciones, instrumentos y equipos meteorológicos
  • Guía radárica, radioguía y radiogoniometría
DEF

Medida de la eficacia de un blanco radárico para interceptar y devolver la energía radioeléctrica.

OBS

[La] medida [...] depende del tamaño, forma, aspecto y características dieléctricas de la superficie del blanco e incluye los efectos, no sólo de la reflexión, sino también de la difusión y de la difracción.

Save record 3

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