TERMIUM Plus®

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DOPPLER LIDAR [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-10-25

English

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

The Doppler lidar (DL) is an active remote sensing instrument that provides range- and time- resolved measurements of radial velocity and attenuated backscatter.

OBS

lidar: A system for detecting the presence of objects or ascertaining their position or motion which works on the principle of radar, but uses laser radiation instead of microwaves.

French

Domaine(s)
  • Télédétection
  • Radar, radioguidage et radiogoniométrie
CONT

Le lidar Doppler mesure uniquement la composante du vent projetée sur l'axe de visée (vitesse radiale).

OBS

lidar : système ou appareil de détection qui émet un faisceau laser et en reçoit l'écho, permettant de déterminer la distance d'un objet.

Spanish

Save record 1

Record 2 2006-03-22

English

Subject field(s)
  • Remote Sensing
CONT

Doppler lidar is used to measure the velocity of a target. When the light transmitted from the lidar hits a target moving towards or away from the lidar, the wavelength of the light reflected/scattered off the target will be changed slightly. This is known as a Doppler shift - hence Doppler Lidar. If the target is moving away from the lidar, the return light will have a longer wavelength (sometimes referred to as a red shift), if moving towards the lidar the return light will be at a shorter wavelength (blue shifted). The target can be either a hard target or an atmospheric target - the atmosphere contains many microscopic dust and aerosol particles which are carried by the wind.

French

Domaine(s)
  • Télédétection
DEF

Lidar atmosphérique qui mesure l'effet Doppler sur le faisceau rétrodiffusé par des particules (diffusion de Mie) ou des molécules (diffusion de Rayleigh) du milieu, et permet de déduire la vitesse relative (celle du vent en attitude, par exemple).

Spanish

Save record 2

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