TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

An instrument combining a pulsed laser transmitter and optical receiver (usually a telescope) with an electronic signal processing unit used for the detection and ranging of various distant targets in the atmosphere, analogous to the principles of operation of microwave radar.  6, record 1, English, - lidar

Record number: 1, Textual support number: 1 CONT

The lidar technique operates on the same principle as radar; in fact, it is sometimes called laser radar. The principal difference between lidar and radar is the wavelength of the radiation used. Radar uses wavelengths in the radio band whereas lidar uses light, that is usually generated by lasers in modern lidar systems.  7, record 1, English, - lidar

Record number: 1, Textual support number: 2 CONT

There are three basic generic types of lidar : range finders, DIAL, and Doppler lidars. Rande finder lidars are the simplest lidars. They are used to measure the distance from the lidar instrument to a solid or hard target Differential Absorption Lidar(DIAL) is used to measure chemical concentrations(such as ozone, water vapor, pollutants) in the atmosphere. Doppler lidar is used to measure the velocity of a target High-resolution DEMs with vertical accuracy as good as 10 cm can be created with Lidar. Lidar is also better able to map bare earth elevations in forested or vegetated areas than other methods because only a single laser pulse needs to be able to reach between trees and the ground.  8, record 1, English, - lidar

Record number: 1, Textual support number: 1 OBS

lidar: Coined word for light detection and ranging.  6, record 1, English, - lidar

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Combinaison d'un laser et d'un récepteur accolés, destinée à étudier les échos produits par les particules de l'atmosphère sur des ondes visibles ou infrarouges.  5, record 1, French, - lidar

Record number: 1, Textual support number: 1 OBS

La détection se fait par des cellules optiques suivies de photomultiplicateurs.  6, record 1, French, - lidar

Record number: 1, Textual support number: 2 OBS

Le lidar sert également à la localisation et à la poursuite télémétrique d'engins dans le ciel.  7, record 1, French, - lidar

Record number: 1, Textual support number: 3 OBS

lidar : acronyme dérivé du terme anglais «light detection and ranging» qui veut dire «détection et télémétrie par ondes lumineuses».  8, record 1, French, - lidar

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Aparato de detección y localización por ondas luminosas.  1, record 1, Spanish, - lidar

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The material in an accelerator wherein the generated neutrons are moderated to permit their absorption(capture) in the target material to produce a new isotope.  1, record 2, English, - blanket%20assembly

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

The total incident energy will interact with the surface in one or more of these three ways. The proportions of each will depend on the wavelength of the energy and the material and condition of the feature. Absorption occurs when radiation(energy) is absorbed into the target while transmission occurs when radiation passes through a target. Reflection occurs when radiation "bounces" off the target and is redirected. In remote sensing, we are most interested in measuring the radiation reflected from targets.  2, record 3, English, - total%20incident%20energy

Record number: 3, Textual support number: 1 OBS

total incident energy: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, record 3, English, - total%20incident%20energy

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Lorsque l'énergie atteint la cible, la surface peut absorber (A) l'énergie, la transmettre (T) ou réfléchir (R) l'énergie incidente (I). L'énergie incidente totale interagira avec la surface selon l'un ou l'autre de ces trois mode d'interaction ou selon leur combinaison. La proportion de chaque interaction dépendra de la longueur d'onde de l'énergie, ainsi que de la nature et des conditions de la surface.  2, record 3, French, - %C3%A9nergie%20incidente%20totale

Record number: 3, Textual support number: 1 OBS

énergie incidente totale : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 3, French, - %C3%A9nergie%20incidente%20totale

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish