TERMIUM Plus®

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ACTIVE SENSOR [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2024-06-30

English

Subject field(s)
  • Electronic Devices
  • Applications of Automation
CONT

Active sensors emit energy into the environment, then measure the environmental reaction. Because active sensors can manage more controlled interactions with the environment, they often achieve superior performance. However, active sensing introduces several risks: the outbound energy may affect the very characteristics that the sensor is attempting to measure. Furthermore, an active sensor may suffer from interference between its signal and those beyond its control. For example, signals emitted by other nearby robots, or similar sensors on the same robot, may influence the resulting measurements. Examples of active sensors include wheel quadrature encoders, ultrasonic sensors, and laser rangefinders.

French

Domaine(s)
  • Dispositifs électroniques
  • Automatisation et applications
CONT

Les capteurs actifs émettent une énergie dans l'environnement et mesurent la réaction de l'environnement à celle-ci.

Spanish

Save record 1

Record 2 2007-02-01

English

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

[A] sensor that measures the backscattering coefficient of the transmitted beam.

CONT

RADARSAT ... uses Synthetic Aperture Radar (SAR), which sends its own microwave signals down to the Earth and processes the signals that it receives back. As an active sensor, RADARSAT's longer wavelength is better suited for atmospheric penetration and can collect data regardless of the Earth's atmospheric conditions.

OBS

A SAR instrument, a lidar, a radar altimeter, etc., are examples of such active sensors.

OBS

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

Key term(s)
  • micro-wave active sensor
  • micro wave active sensor
  • active micro-wave sensor
  • active micro wave sensor

French

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

Capteur auquel est incorporé ou associé un émetteur qui irradie la scène dans la bande spectrale du récepteur.

CONT

[Le] capteur actif, c'est-à-dire émettant un faisceau d'ondes et enregistrant le signal rétrodiffusé par la cible touchée, [travaille] dans le domaine des hyperfréquences (micro-ondes, entre 1 GHz et 100 GHz [...]). Les radars imageurs utilisent cette technique afin de produire des images de la cible visée.

OBS

Le radar et le lidar sont des exemples de capteurs actifs.

OBS

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

Spanish

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

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