TERMIUM Plus®

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

SPOTLIGHT MODE [3 records]

Record 1 2008-07-23

English

Subject field(s)
  • Spacecraft
  • Remote Sensing

French

Domaine(s)
  • Engins spatiaux
  • Télédétection
DEF

Mode de fonctionnement et de détection du satellite RADARSAT de la deuxième génération, RADARSAT III; ce mode de fonctionnement est en expérimentation sur le RADARSAT actuel.

OBS

mode saisie hyperfine : terme uniformisé par le Comité d'uniformisation de la terminologie spatiale - CUTS.

Spanish

Save record 1

Record 2 2006-06-01

English

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

A very high resolution mode where a radar beam is oriented on a target for a longer period of time, thus increasing the synthetic aperture length.

OBS

The three common SAR acquisition modes ...: Stripmap SAR, Spotlight SAR, and ScanSAR. ... A Spotlight SAR steers the antenna beam to continuously illuminate a certain region on ground much longer than in the Stripmap case [Carrara et al., 1995]. As a result, the azimuth bandwidth becomes larger, which hence may be exploited to increase the azimuth resolution. ... It offers the possibility to measure different components of the surface current using only a single pass (in case of a spotlight single-pass interferometry configuration). To this purpose the total azimuth bandwidth is divided into different (e.g. two) non-overlapping parts which are processed separately with their individual optimum Doppler centroid values so that the resulting images represent observations from two different aspect angles. A spotlight system operated in that way provides data similar to a Dual-Beam ATI [Allied Telesyn International] configuration.

OBS

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

French

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

Mode d'opération dont la très haute résolution est obtenue en orientant le faisceau radar sur la cible pour une période de temps accrue, ce qui a pour effet d'augmenter la longueur de l'ouverture synthétique.

CONT

En mode «spotlight», l'image radar couvre une surface de 5 x 10 km, avec une résolution maximale jusqu'à 1 m.

OBS

mode «spotlight» : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

PHR

Illuminer une cible en mode «spotlight».

PHR

Radar SAR en mode «spotlight».

Spanish

Save record 2

Record 3 1982-03-24

English

Subject field(s)
  • Electronic Warfare

French

Domaine(s)
  • Guerre électronique

Spanish

Save record 3

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