TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 OBS

differential absorption lidar; DIAL : designations standardized by NATO.  3, fiche 1, Anglais, - differential%20absorption%20lidar

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An active remote sensing technique for measuring the atmospheric backscatter radiation from two transmitted laser pulses which are tuned at slightly different wavelengths.  4, fiche 1, Anglais, - differential%20absorption%20lidar

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 OBS

lidar à absorption différentielle; DIAL : désignations normalisées par l'OTAN.  3, fiche 1, Français, - lidar%20%C3%A0%20absorption%20diff%C3%A9rentielle

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, 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, fiche 2, Anglais, - lidar

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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, fiche 2, Anglais, - lidar

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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, fiche 2, Anglais, - lidar

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lidar: Coined word for light detection and ranging.  6, fiche 2, Anglais, - lidar

Fiche 2,  Justifications,  Français

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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, fiche 2, Français, - lidar

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La détection se fait par des cellules optiques suivies de photomultiplicateurs.  6, fiche 2, Français, - lidar

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Le lidar sert également à la localisation et à la poursuite télémétrique d'engins dans le ciel.  7, fiche 2, Français, - lidar

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lidar : acronyme dérivé du terme anglais «light detection and ranging» qui veut dire «détection et télémétrie par ondes lumineuses».  8, fiche 2, Français, - lidar

Fiche 2,  Justifications,  Espagnol

Record number: 2, Textual support number: 1 DEF

Aparato de detección y localización por ondas luminosas.  1, fiche 2, Espagnol, - lidar

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

DIAL Techniques. DIAL(Differential Absorption of Laser Light) uses a two or more wavelength LIDAR to examine the absorption of a pollutant. By subtracting the effect from the non-absorbed wavelength, the system can be made specific to a certain pollutant. DIAL systems have been used for remotely measuring SO₂ but at the present time sensitivity is low requiring tens to hundreds of parts per million concentrations.  1, fiche 3, Anglais, - DIAL%20system

Fiche 3,  Justifications,  Français

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 CONT

DIAL Techniques. DIAL(Differential Absorption of Laser Light) uses a two or more wavelength LIDAR to examine the absorption of a pollutant. By subtracting the effect from the non-absorbed wavelength, the system can be made specific to a certain pollutant. DIAL systems have been used for remotely measuring SO₂ but at the present time sensitivity is low requiring tens to hundreds of parts per million concentrations.  1, fiche 4, Anglais, - differential%20absorption%20of%20laser%20light

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 DEF

Technique that usually uses two laser frequencies to determine the spatial distribution of atmospheric gases.  1, fiche 5, Anglais, - DIAL%20technique

Record number: 5, Textual support number: 1 OBS

DIAL means :differential absorption lidar.  2, fiche 5, Anglais, - DIAL%20technique

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol