TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Traffic radar works by shining its microwave searchlight down the road. When you come in range, the microwave beam bounces off your car, and the radar antenna looks for the reflections.  4, record 1, English, - traffic%20radar

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 CONT

El funcionamiento del radar se basa en un fenómeno físico denominado efecto Doppler y se refiere a la variación de la frecuencia que emite un emisor en movimiento. [...] Los radares de tráfico mandan una señal al coche que pasa y reciben una señal rebotada. En función de las diferencias de la frecuencia de la señal rebotada en el coche que pasa se puede calcular la velocidad.  1, record 1, Spanish, - radar%20de%20tr%C3%A1fico

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Ground-based weather radars emerged during World War II and have since been used to observe precipitation, mostly over land. Ground-based radars send out pulses of microwave energy in narrow beams that scan in a circular pattern. When the microwave pulse encounters precipitation particles in the atmosphere, the energy is scattered in all directions, sending some energy back to the radar. These measurements are used to estimate intensity, altitude, precipitation type(e. g., rain, snow, hail), and motion. Obtaining continuous measurements of precipitation from ground-based systems(e. g., from rain gauges and radar systems) presents a challenge due to large gaps between monitoring sites on land and huge gaps over the ocean.  1, record 2, English, - ground%2Dbased%20weather%20radar

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

In the application area of forward collision warning systems, microwave radar and machine vision technology help detect and avert vehicle collisions. These systems typically use in-vehicle displays or audible alerts to warn drivers of unsafe following distances. If a driver does not properly apply brakes in a critical situation, some systems automatically assume control and apply the brakes in an attempt to avoid a collision.  7, record 3, English, - forward%20collision%20warning%20system

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

An active microwave sensor that transmits a focused pulse of radar energy and receives reflected energy from a target in a form that can be converted into a high-resolution image.  3, record 4, English, - synthetic%20aperture%20radar

Record number: 4, Textual support number: 1 OBS

synthetic aperture radar; SAR: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  4, record 4, English, - synthetic%20aperture%20radar

Record number: 4, Textual support number: 2 OBS

synthetic aperture radar; SAR: Reproduced from "Titles, Names and Acronyms related to the activities of the International Oceanographic Commission of Unesco", with the authorization of Unesco.  5, record 4, English, - synthetic%20aperture%20radar

Record number: 4, Textual support number: 1 PHR

Multi-polarimetric SAR.  4, record 4, English, - synthetic%20aperture%20radar

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Un radar à synthèse d'ouverture (RSO) est un radar qui effectue un traitement des données reçues afin d'améliorer la résolution azimutale. Le traitement effectué permet d'affiner l'ouverture de l'antenne. On parle donc de synthèse d'ouverture. D'où le nom de ce type de système. Les radars à synthèse d'ouverture sont donc à opposer aux «radars à ouverture réelle» (RAR ou real aperture radar en anglais) pour lesquels la résolution azimutale est simplement obtenue en utilisant une antenne d'émission/réception possédant un lobe d'antenne étroit dans la direction azimutale.  8, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 4, Textual support number: 1 OBS

radar à synthèse d'ouverture; SAR : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  8, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 4, Textual support number: 2 OBS

radar à antenne synthétique; radar à synthèse d'ouverture; RAAS : Reproduit de "Titles, Names and Acronyms related to the activities of the International Oceanographic Commission of Unesco", avec l'autorisation de l'Unesco.  9, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 4, Textual support number: 1 PHR

Satellite radar à synthèse d'ouverture.  8, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 4, Textual support number: 2 PHR

SAR multi-polarimétrique.  8, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 4, Textual support number: 3 PHR

Radar SAR bistatique.  8, record 4, French, - radar%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Sistema de radar aerotransportado en el que los ecos radar recibidos de la aeronave en vuelo son sintetizados por computadora para representar la señal que daría una antena de gran altura.  3, record 4, Spanish, - radar%20de%20apertura%20sint%C3%A9tica

Record number: 4, Textual support number: 1 OBS

Reproducido del "Titles, Names and Acronyms related to the activities of the International Oceanographic Commission of Unesco", con la autorización de Unesco.  1, record 4, Spanish, - radar%20de%20apertura%20sint%C3%A9tica

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

The(microwave) signal reflected by elements of an illuminated scene back towards the radar.  4, record 5, English, - radar%20backscatter

Record number: 5, Textual support number: 1 OBS

radar backscatter: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  5, record 5, English, - radar%20backscatter

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Signal micro-onde rétrodiffusé en direction du radar, par les éléments de la scène illuminée.  2, record 5, French, - r%C3%A9trodiffusion%20radar

Record number: 5, Textual support number: 1 OBS

rétrodiffusion radar : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 5, French, - r%C3%A9trodiffusion%20radar

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Cantidad de energía devuelta hacia la antena del radar por partículas situadas en el haz del radar, después de la emisión de un impulso de radar.  2, record 5, Spanish, - retrodifusi%C3%B3n%20radar

Record 6,  Textual support,  English

Record number: 6, 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 6, English, - lidar

Record number: 6, 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 6, English, - lidar

Record number: 6, 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 6, English, - lidar

Record number: 6, Textual support number: 1 OBS

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

Record 6,  Textual support,  French

Record number: 6, 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 6, French, - lidar

Record number: 6, Textual support number: 1 OBS

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

Record number: 6, Textual support number: 2 OBS

Le lidar sert également à la localisation et à la poursuite télémétrique d'engins dans le ciel.  7, record 6, French, - lidar

Record number: 6, 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 6, French, - lidar

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 DEF

Aparato de detección y localización por ondas luminosas.  1, record 6, Spanish, - lidar

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Electro-Magnetic Remote Sensing of Earth’s Resources.  6, record 7, English, - electromagnetic%20remote%20sensing

Record number: 7, Textual support number: 1 OBS

Remote Sensing is the science and art of acquiring information(spectral, spatial, temporal) about material objects, area, or phenomenon, without coming into physical contact with the objects, or area, or phenomenon under investigation.... In remote sensing, information transfer is accomplished by use of electromagnetic radiation(EMR). EMR is a form of energy that reveals its presence by the observable effects it produces when it strikes the matter.... Types [of remote sensing] in respect to the type of energy resources. Passive remote sensing makes use of sensors that detect the reflected or emitted electro-magnetic radiation from natural sources. Active remote sensing makes use of sensors that detect reflected responses from objects that are irradiated from artificially-generated energy sources, such as radar.... In respect to wavelength regions, remote sensing is categorized as follows : visible and reflective infrared remote sensing, thermal infrared remote sensing and microwave remote sensing.  6, record 7, English, - electromagnetic%20remote%20sensing

Record number: 7, Textual support number: 2 OBS

electromagnetic remote sensing; EMRS: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  7, record 7, English, - electromagnetic%20remote%20sensing

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Type particulier de télédétection qui utilise l'interaction du rayonnement électromagnétique avec la matière.  4, record 7, French, - t%C3%A9l%C3%A9d%C3%A9tection%20%C3%A9lectromagn%C3%A9tique

Record number: 7, Textual support number: 1 CONT

Aspects spectrométriques de la télédétection électromagnétique (visible + IR proche, IR thermique et hyperfréquences-radar) pour la géologie.  5, record 7, French, - t%C3%A9l%C3%A9d%C3%A9tection%20%C3%A9lectromagn%C3%A9tique

Record number: 7, Textual support number: 1 OBS

télédétection électromagnétique. Ce terme est à distinguer des techniques aériennes de prospection géophysique (aéromagnétométrie, aérogravimétrie, etc.).  4, record 7, French, - t%C3%A9l%C3%A9d%C3%A9tection%20%C3%A9lectromagn%C3%A9tique

Record number: 7, Textual support number: 2 OBS

télédétection électromagnétique; TDEM : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  6, record 7, French, - t%C3%A9l%C3%A9d%C3%A9tection%20%C3%A9lectromagn%C3%A9tique

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

... imaging radar systems are active sensors that "illuminate" surface features with broadcast microwave energy and record a returned signal. Most imaging radar systems produce microwaves with wavelengths between 1 cm and 1 meter, longer than the wavelengths used in weather radar to detect rain and snow. These longer wavelength microwave signals propagate through the atmosphere and clouds with almost no interaction or weakening. As a result imaging radar systems can be used to map surface features day or night and in almost any weather conditions. These characteristics make radar imaging especially useful in tropical and polar regions where persistent cloud cover hampers optical remote sensing efforts.  2, record 8, English, - surface%20feature

Record number: 8, Textual support number: 2 CONT

Surface Feature ...: quarries, surface roughness, boulder, fields, rock outcrops, soil type, disturbed soil.  3, record 8, English, - surface%20feature

Record number: 8, Textual support number: 1 OBS

surface feature: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  4, record 8, English, - surface%20feature

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

Entité de surface [...] : carrières, rugosité de surface, champs de blocs, affleurements rocheux, type de sol, sol perturbé.  2, record 8, French, - caract%C3%A9ristique%20de%20surface

Record number: 8, Textual support number: 1 OBS

caractéristique de surface : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 8, French, - caract%C3%A9ristique%20de%20surface

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

A microwave radar signal is emitted from an antenna installed aboard a satellite or an airplane. The signal is reflected by the objects on the ground. The resulting backscattering coefficient is influenced by the surface roughness and the dielectric properties of the objects.  2, record 9, English, - backscattering%20coefficient

Record number: 9, Textual support number: 1 OBS

dielectric: Having the property of transmitting electric effects without conduction.  3, record 9, English, - backscattering%20coefficient

Record number: 9, Textual support number: 2 OBS

backscattering coefficient: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  4, record 9, English, - backscattering%20coefficient

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

L'intensité d'une image radar [...] est liée au coefficient de rétrodiffusion, c'est-à-dire la capacité des surfaces à renvoyer les ondes radar vers l'antenne du radar. Le coefficient de rétrodiffusion est un indicateur de la rugosité des surfaces et de leur humidité.  2, record 9, French, - coefficient%20de%20r%C3%A9trodiffusion

Record number: 9, Textual support number: 2 CONT

Le coefficient de rétrodiffusion radar est un des paramètres mesurables sur une image radar. [...] Sur une surface inondée (présence d'eau libre), la réflexion du signal est spéculaire et l'intensité rétrodiffusée quasiment nulle. Par contre, pour un sol partiellement saturé, plus la teneur en eau est élevée, plus la constante diélectrique est grande, donc moins l'onde pénètre dans le sol et plus l'intensité rétrodiffusée est forte.  3, record 9, French, - coefficient%20de%20r%C3%A9trodiffusion

Record number: 9, Textual support number: 1 OBS

diélectrique : Qui ne conduit pas le courant électrique.  4, record 9, French, - coefficient%20de%20r%C3%A9trodiffusion

Record number: 9, Textual support number: 2 OBS

spéculaire : Se dit de ce qui réfléchit la lumière comme un miroir.  5, record 9, French, - coefficient%20de%20r%C3%A9trodiffusion

Record number: 9, Textual support number: 3 OBS

coefficient de rétrodiffusion : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  5, record 9, French, - coefficient%20de%20r%C3%A9trodiffusion

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

Remote sensing systems, such as radar, that produce electromagnetic radiation and measure its reflection back from a surface.  3, record 10, English, - active%20microwave%20remote%20sensing

Record number: 10, Textual support number: 1 CONT

There are two types of microwave remote sensing : active and passive. The active type receives the backscattering which is reflected from the transmitted microwave which is incident on the ground surface. Synthetic aperture radar(SAR), microwave scatterometers, radar altimeters etc. are active microwave sensors.  4, record 10, English, - active%20microwave%20remote%20sensing

Record number: 10, Textual support number: 1 OBS

active microwave remote sensing: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  5, record 10, English, - active%20microwave%20remote%20sensing

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

La télédétection en hyperfréquences actives est une technique qui permet d'observer la surface de la mer en émettant un signal électromagnétique depuis un satellite en direction de la surface et en détectant la portion de ce signal renvoyée vers le satellite. L'un des avantages de la télédétection active est l'augmentation, d'un à deux ordres de grandeur de la résolution spatiale des images, grâce à la technologie du radar à antenne synthétique (RAAS).  6, record 10, French, - t%C3%A9l%C3%A9d%C3%A9tection%20en%20hyperfr%C3%A9quences%20actives

Record number: 10, Textual support number: 1 OBS

Les bandes spectrales utilisées en télédétection sont : l'ultraviolet, le visible, le proche infrarouge, l'infrarouge moyen, l'infrarouge thermique et les micro-ondes. Ce sont ces dernières qu'on utilise dans les satellites à radar, comme le satellite canadien RADARSAT-1. Les micro-ondes ont la propriété de traverser les nuages, le brouillard et l'obscurité et donc de permettre la télédétection en tout temps.  7, record 10, French, - t%C3%A9l%C3%A9d%C3%A9tection%20en%20hyperfr%C3%A9quences%20actives

Record number: 10, Textual support number: 2 OBS

L'emploi du calque «micro-ondes» pour désigner les «hyperfréquences» est à proscrire.  2, record 10, French, - t%C3%A9l%C3%A9d%C3%A9tection%20en%20hyperfr%C3%A9quences%20actives

Record number: 10, Textual support number: 3 OBS

télédétection en hyperfréquences actives : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 10, French, - t%C3%A9l%C3%A9d%C3%A9tection%20en%20hyperfr%C3%A9quences%20actives

Record 10,  Textual support,  Spanish

Record number: 10, Textual support number: 1 CONT

A pesar del interés de estas aplicaciones, sin lugar a dudas la teledetección más importante en microondas se refiere a aquella que detecta información del sistema Tierra-Atmósfera a partir de la reflexión de un haz de microondas emitido por el propio sistema remoto, lo que se conoce con el nombre de teledetección activa de microondas.  1, record 10, Spanish, - teledetecci%C3%B3n%20activa%20de%20microondas

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

A radar pulse is transmitted from the antenna to the ground. The radar pulse is scattered by the ground targets back to the antenna.  2, record 11, English, - radar%20pulse

Record number: 11, Textual support number: 1 OBS

In synthetic aperture radar(SAR) imaging, microwave pulses are transmitted by an antenna towards the Earth surface. The microwave energy scattered back to the spacecraft is measured. The SAR makes use of the radar principle to form an image by utilising the time delay of the backscattered signals. In real aperture radar imaging, the groud resolution is limited by the size of the microwave beam sent out from the antenna. Finer details on the ground can be resolved by using a narrower beam. The beam width is inversely proportional to the size of the antenna, i. e. the longer the antenna, the narrower the beam.  2, record 11, English, - radar%20pulse

Record number: 11, Textual support number: 2 OBS

radar pulse: term officially approved by the RADARSAT-2 Official Approval Group (ROAG).  3, record 11, English, - radar%20pulse

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

La génération d'une image SAR nécessite la combinaison de deux mécanismes de balayage. Tout d'abord un balayage latéral. Chaque impulsion se propopage à une vitesse égale à celle de la lumière (c = 3.108 m.s-1) selon la direction de visée du satellite (across track), l'écho reçu au niveau de l'antenne est ensuite échantillonné à la fréquence fe (18.96 Mhz pour ERS-1). Simultanément, la scène est balayée dans le sens de déplacement du satellite (along track) à la fréquence d'émission des impulsions notée fp ou PRD (Pulse Rate Frequency) : (entre 1640 et 1720 Hz, par pas de 2 Hz dans le cas d'ERS-1). Les échelles de grandeur des divers mécanismes mis en jeux étant différentes, nous pouvons les supposer indépendants entre eux. Le signal reçu peut être ainsi organisé dans une matrice bi-dimensionnelle, où les paramètres de temps et de distance sont représentés respectivement en ligne par le cadencement des impulsions (PRF) et en colonne par la position des échos sur la ligne, une ligne étant acquise à chaque émission d'une impulsion radar (ou pulse). Une colonne de l'image représentera l'ensemble des réponses des réflecteurs placés à une distance donnée de l'antenne (distance radiale). Sa position sur la ligne est linéairement liée au temps mis par l'onde radar à lui revenir après s'être réfléchie sur le point cible, le radar étant considéré immobile durant ce temps.  2, record 11, French, - impulsion%20radar

Record number: 11, Textual support number: 1 OBS

impulsion radar : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 11, French, - impulsion%20radar

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

Continuous-wave dual-frequency microwave radar developed for planetary rovers and providing several sensing functions with essentially the same hardware.  2, record 12, English, - guidance%20and%20into%20the%20ground%20exploration%20radar

Record number: 12, Textual support number: 1 CONT

GINGER (Guidance and INto the Ground Exploration Radar) is a novel continuous-wave radar instrument intended for use on robotic vehicles such as Moon or Mars rovers. GINGER can measure the rover’s speed, detect obstacles, determine whether or not the soil is too soft for the rover to traverse, and measure the thickness and electromagnetic properties of soil layers below the surface.  3, record 12, English, - guidance%20and%20into%20the%20ground%20exploration%20radar

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

GINGER (pour «Guidance and INto the Ground Exploration Radar») est un nouveau type d'instrument radar à émission continue destiné à de petits véhicules, comme les engins d'exploration de la Lune ou de Mars. Il peut mesurer la vitesse du véhicule et détecter les obstacles. Il peut aussi déterminer si le sol est trop meuble ou s'il est praticable, et déterminer l'épaisseur et les propriétés électromagnétiques des couches sous-jacentes. Un prototype de cet instrument a été construit et testé tant au laboratoire que sur le terrain.  4, record 12, French, - GINGER

Record number: 12, Textual support number: 2 CONT

Guidance & INto the Ground Exploration Radar (GINGER - radar de guidage et d'exploration souterraine), mis au point pour des missions sur d'autres planètes [...] est maintenant utilisé dans différentes applications terrestres telles que des investigations géophysiques, la recherche d'objets enfouis, les mesures de l'épaisseur ou la détermination des propriétés des matériaux non métalliques et la détection de mines antipersonnel.  3, record 12, French, - GINGER

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

A device that measures the microwave radiation emitted or reflected by an object.  3, record 13, English, - microwave%20radiometer

Record number: 13, Textual support number: 1 CONT

Radar is an active microwave sensor... the passive counterpart [is] the microwave radiometer. This device responds to the extremely low levels of microwave energy that are naturally emitted and/or reflected from terrain features.  4, record 13, English, - microwave%20radiometer

Record number: 13, Textual support number: 1 OBS

radiometer: An instrument for quantitatively measuring the intensity of EMR [electromagnetic radiation] in some band of wavelengths in any part of the EM spectrum. Usually used with a modifier, such as [infrared] IR radiometer or microwave radiometer.  5, record 13, English, - microwave%20radiometer

Record number: 13, Textual support number: 2 OBS

microwave radiometer; MWR: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, record 13, English, - microwave%20radiometer

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Instrument de mesure du rayonnement hyperfréquence souvent gradué en températures de brillance.  5, record 13, French, - radiom%C3%A8tre%20hyperfr%C3%A9quences

Record number: 13, Textual support number: 1 CONT

Les radiomètres à hyperfréquences peuvent être utilisés au sol ou à partir d'une plate-forme aéroportée ou spatiale. Les composantes d'un radiomètre à hyperfréquences sont : l'antenne, le système récepteur formé par un amplificateur, le détecteur et le filtre passe-bas (aussi appelé intégrateur par quelques auteurs) et le système d'affichage ou d'enregistrement des données. À cela, il faut ajouter un générateur d'ondes quand le radiomètre est utilisé en mode actif comme diffusomètre.  5, record 13, French, - radiom%C3%A8tre%20hyperfr%C3%A9quences

Record number: 13, Textual support number: 1 OBS

radiomètre hyperfréquences : terme uniformisé par le Comité d'uniformisation de la terminologie spatiale (CUTS)  5, record 13, French, - radiom%C3%A8tre%20hyperfr%C3%A9quences

Record number: 13, Textual support number: 2 OBS

radiomètre à hyperfréquences; MWR : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  6, record 13, French, - radiom%C3%A8tre%20hyperfr%C3%A9quences

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 DEF

A radar that opperates in the microwave range and that allows for the conversion of acquired data into bidimensional images.  3, record 14, English, - SAR%20imaging%20radar

Record number: 14, Textual support number: 1 OBS

Typical bandwidths for an imaging radar are in the range 10 to 200 MHz. At the Earth’s surface, the energy in the radar pulse is scattered in all directions, with some reflected back toward the antenna. This back scatter returns to the radar as a weaker radar echo and is received by the antenna in a specific polarization (horizontal or vertical, not necessarily the same as the transmitted pulse), for later processing and display as an image.  4, record 14, English, - SAR%20imaging%20radar

Record number: 14, Textual support number: 2 OBS

SAR imaging radar: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, record 14, English, - SAR%20imaging%20radar

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

Radar fonctionnant dans le domaine des hyperfréquences et permettant de restituer les données acquises sous forme d'images à deux dimensions [portée et azimut].  2, record 14, French, - radar%20imageur%20SAR

Record number: 14, Textual support number: 1 OBS

radar imageur SAR : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 14, French, - radar%20imageur%20SAR

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 DEF

A radar system capable of generating nanosecond pulses of energy at microwave frequencies.  3, record 15, English, - short%20pulse%20radar

Record number: 15, Textual support number: 1 OBS

short pulse radar: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  4, record 15, English, - short%20pulse%20radar

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 DEF

Système radar capable d'émettre, dans les hyperfréquences, des impulsions nanoseconde.  2, record 15, French, - radar%20%C3%A0%20impulsions%20courtes

Record number: 15, Textual support number: 1 OBS

radar à impulsions courtes : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 15, French, - radar%20%C3%A0%20impulsions%20courtes

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 DEF

The orientation of the radar beam relative to the Earth’s surface.  3, record 16, English, - polarization

Record number: 16, Textual support number: 1 CONT

Polarization of the radar signal is the orientation of the electromagnetic field and is a factor in the way in which the radar signal interacts with ground objects and the resulting energy reflected back. Most radar imaging sensors are designed to transmit microwave radiation either horizontally polarized(H) or vertically polarized(V), and receive either the horizontally or vertically polarized backscattered energy.  4, record 16, English, - polarization

Record number: 16, Textual support number: 1 OBS

Polarimetric radars, like RADARDAT-2, are able to transmit and receive both horizontal and vertical polarizations. With this configuration, four linearly polarized signals are measured coherently in the scattering matrix: HH, HV, VH, and VV. Consequently, the user can derive additional information about the target to aid in the analysis.  5, record 16, English, - polarization

Record number: 16, Textual support number: 2 OBS

polarization: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  6, record 16, English, - polarization

Record number: 16, Textual support number: 1 PHR

Polarization channel, polarization of the radar signal.  6, record 16, English, - polarization

Record number: 16, Textual support number: 2 PHR

Quad-polarization mode.  6, record 16, English, - polarization

Record number: 16, Textual support number: 3 PHR

Radar polarization signature.  7, record 16, English, - polarization

Record 16,  Textual support,  French

Record number: 16, Textual support number: 1 CONT

Le REM [rayonnement électromagnétique] se caractérise [notamment] par [...] la polarisation, qui caractérise la variation du plan dans lequel oscille l'onde. Si cette variation est aléatoire, l'onde est dite non polarisée. Si ce plan reste fixe, la polarisation est dite rectiligne.  3, record 16, French, - polarisation

Record number: 16, Textual support number: 2 CONT

La polarisation représente la mesure de l'orientation du plan d'oscillation du signal radar, déterminée par l'antenne du radar. En effet, l'antenne d'un radar peut être ajustée de façon différente à l'émission et à la réception du signal. Les radars utilisés en télédétection sont habituellement conçus pour transmettre un signal polarisé soit horizontalement, soit verticalement. De même, le radar peut recevoir un signal polarisé dans le plan horizontal, dans le plan vertical ou encore dans les deux plans. On désigne habituellement le plan horizontal par la lettre H et le plan vertical par la lettre V. Une image radar peut donc représenter un signal HH (transmission horizontale, réception horizontale), VV (transmission verticale, réception verticale), HV (transmission horizontale, réception verticale) ou vice versa.  4, record 16, French, - polarisation

Record number: 16, Textual support number: 3 CONT

RADARSAT-2 est conçu pour transmettre alternativement un signal H et un signal V de même que pour recevoir simultanément ces signaux, créant ainsi des données polarimétriques. Cette particularité permet au capteur de générer des images dans une variété de polarisations (HH, VV, HV et VH). Les données radars en polarisation parallèle ou croisée présentent des caractéristiques spécifiques liées aux propriétés des surfaces observées. Il est donc possible d'accentuer certaines propriétés de surfaces, telles l'humidité ou la rugosité du sol, en choisissant la polarisation appropriée ou encore en combinant diverses polarisations.  4, record 16, French, - polarisation

Record number: 16, Textual support number: 1 OBS

polarisation : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 GTTR).  5, record 16, French, - polarisation

Record number: 16, Textual support number: 1 PHR

Canal de polarisation.  5, record 16, French, - polarisation

Record number: 16, Textual support number: 2 PHR

Polarisation radar.  5, record 16, French, - polarisation

Record number: 16, Textual support number: 3 PHR

Mode à polarisation en quadrature.  5, record 16, French, - polarisation

Record 16,  Textual support,  Spanish

Record number: 16, Textual support number: 1 DEF

Proceso mediante el cual una onda electromagnética sólo evoluciona en determinados planos.  1, record 16, Spanish, - polarizaci%C3%B3n

Record number: 16, Textual support number: 1 OBS

De una onda o de un vector de campo.  1, record 16, Spanish, - polarizaci%C3%B3n

Record 17,  Textual support,  English

Record number: 17, Textual support number: 1 CONT

Traditional methods for acquiring topographic data typically rely on aerial photogrammetry, where measurement of the terrain surface below forest canopy is difficult and error prone. The recent emergence of airborne P-band interferometric synthetic aperture radar(IFSAR), a high-resolution, microwave remote sensing technology, has the potential to provide significantly more accurate terrain models in forested areas. Low-frequency, P-band radar energy physically penetrates through the vegetation canopy and reflects from the underlying terrain surface, allowing for accurate measurement of the terrain surface elevation even in areas with dense forest cover.  3, record 17, English, - interferometric%20synthetic%20aperture%20radar

Record number: 17, Textual support number: 1 OBS

synthetic aperture radar : An active microwave sensor that transmits a focused pulse of radar energy and receives reflected energy from a target in a form that can be converted into a high-resolution image.  4, record 17, English, - interferometric%20synthetic%20aperture%20radar

Record number: 17, Textual support number: 2 OBS

inferferomety: The action or art of measuring interference phenomena.  5, record 17, English, - interferometric%20synthetic%20aperture%20radar

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 OBS

Un radar à synthèse d'ouverture (SAR) est un radar imageur qui effectue un traitement des donnés reçues afin d'améliorer la résolution azimutale. Le traitement effectué permet d'affiner l'ouverture de l'antenne. On parle donc de synthèse d'ouverture. D'où le nom de ce type de système. Les radars à synthèse d'ouverture sont donc à opposer aux «radars à ouverture réelle» (RAR ou real aperture radar en anglais) pour lesquelles la résolution azimutale est simplement obtenue en utilisant une antenne d'émission/réception possédant un lobe d'antenne étroit dans la direction azimutale.  2, record 17, French, - radar%20interf%C3%A9rom%C3%A9trique%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 17, Textual support number: 2 OBS

L'émergence récente des données interférométriques radar aéroporté à synthèse d'ouverture en bande P (IFSAR), une technologie de télédétection micro-onde à haute résolution, pourrait fournir des modèles d'altitude significativement plus précis dans les zones forestières. L'énergie à basse fréquence du radar en bande P pénètre physiquement à travers le couvert de végétation et est réfléchie par la surface sous-jacente du terrain permettant la mesure précise de l'altitude à la surface du terrain, même dans les zones de couvert forestier dense.  3, record 17, French, - radar%20interf%C3%A9rom%C3%A9trique%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record number: 17, Textual support number: 3 OBS

interférométrie : Technique de mesure des franges d'interférences.  4, record 17, French, - radar%20interf%C3%A9rom%C3%A9trique%20%C3%A0%20synth%C3%A8se%20d%27ouverture

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 CONT

The optics-equivalent in a radar imaging system is a long rectangular antenna which transmits and receives microwave energy. Resolution which is the ability of a system to differentiate between two closely spaced objects is dependent on focal length in optical sensors and in the along-track direction antenna length in radar systems.  1, record 18, English, - radar%20imaging%20system

Record 18,  Textual support,  French

Record number: 18, Textual support number: 1 CONT

L'élément «optique» d'un système radar imageur est une longue antenne rectangulaire, qui transmet et reçoit l'énergie des hyperfréquences. La résolution est la capacité d'un système de discriminer deux objets rapprochés. Elle dépend de la longueur focale des capteurs des systèmes optiques et, dans la direction azimutale, de la longueur de l'antenne des systèmes radar.  1, record 18, French, - syst%C3%A8me%20radar%20imageur

Record 18,  Textual support,  Spanish

Record 19,  Textual support,  English

Record number: 19, Textual support number: 1 CONT

... radar detectors are usually active in that they first emit a pulse of microwaves. This microwave energy travels to the surface of the Earth and the reflected energy is detected by the sensor(a bit like flash photography). By using microwave energy in remote sensing, satellites like RADARSAT are able to see the Earth at night and through clouds.  2, record 19, English, - reflected%20energy

Record number: 19, Textual support number: 1 OBS

reflected energy: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, record 19, English, - reflected%20energy

Record 19,  Textual support,  French

Record number: 19, Textual support number: 1 CONT

[...] les capteurs radars sont généralement actifs en ce sens qu'ils émettent d'abord une impulsion hyperfréquence qui est transmise vers la surface de la Terre, et l'énergie réfléchie est détectée par le capteur à bord du satellite (un peu comme la photographie au flash). Utilisée en télédétection, cette énergie hyperfréquence permet à des satellites comme RADARSAT de «voir» la nuit et à travers les nuages.  2, record 19, French, - %C3%A9nergie%20r%C3%A9fl%C3%A9chie

Record number: 19, Textual support number: 1 OBS

énergie réfléchie : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 19, French, - %C3%A9nergie%20r%C3%A9fl%C3%A9chie

Record 19,  Textual support,  Spanish

Record 20,  Textual support,  English

Record number: 20, Textual support number: 1 DEF

Instrument for measuring microwave radiation refracted by a non-smooth surface, such as the sea.  2, record 20, English, - microwave%20scatterometer

Record number: 20, Textual support number: 1 CONT

Instrumentation flown on Seasat included a radar altimeter, a microwave scatterometer for measuring surface wind speed and direction, a scanning multichannel microwave radiometer for sea surface temperature, a visible and infrared radiometer, and the first spaceborne synthetic aperture radar.  3, record 20, English, - microwave%20scatterometer

Record number: 20, Textual support number: 2 CONT

Microwave scatterometer... measures the microwave scattering or reflective properties of surfaces. It is also non-imaging, and is specifically designed to measure backscattering. This requires that it detect more detailed spectral information than imaging radar but has reduced spatial resolution and aerial coverage. The surface is scanned in two or more directions, usually by multiple sensors. The primary application of microwave scatterometers is to measure wind vectors(that is, speed and direction) over the ocean surface. This is based on the principle of ocean ’roughness’ being caused by wind and resulting in a characteristic surface pattern which may be identified by its scattering properties.  4, record 20, English, - microwave%20scatterometer

Record 20,  Textual support,  French

Record number: 20, Textual support number: 1 CONT

Diffusomètre micro-ondes pour la mesure de la vitesse et de la direction des vents.  2, record 20, French, - diffusiom%C3%A8tre%20%C3%A0%20hyperfr%C3%A9quences

Record number: 20, Textual support number: 2 CONT

Cette carte établie à partir des données du satellite américain QuikSCAT défilant à 800 km d'altitude grâce à l'instrument SeaWinds, diffusiomètre micro-onde à haute fréquences, qui permet d'effectuer des observations à travers les nuages et de mesurer la vitesse moyenne des vents à 10 mètres au-dessus du niveau de l'océan.  3, record 20, French, - diffusiom%C3%A8tre%20%C3%A0%20hyperfr%C3%A9quences

Record 20,  Textual support,  Spanish

Record number: 20, Textual support number: 1 DEF

Instrumento para medir la radiación de microondas refractada por una superficie no uniforme, tal como el mar.  2, record 20, Spanish, - dispers%C3%B3metro%20de%20microondas

Record 21,  Textual support,  English

Record number: 21, Textual support number: 1 DEF

A microwave radar scatterometer [that] measures near-surface wind vectors(both speed and direction) over the global oceans.  2, record 21, English, - NASA%20scatterometer

Record number: 21, Textual support number: 1 CONT

NASA Scatterometer(NSCAT) is an active microwave radar to measure winds over the oceans by transmitting Ku band microwave pulse(13. 995 GHz) and receiving backscatter powers from the ocean surface. The backscatter powers is subject to changes in direction of surface waves. Multidirectional measurements can thus be used to solve wind speed and direction simultaneously by using algorithm derived from the previous studies.  3, record 21, English, - NASA%20scatterometer

Record number: 21, Textual support number: 2 CONT

Using the space-borne NASA scatterometer (NSCAT) to determine the frozen and thawed seasons ...  4, record 21, English, - NASA%20scatterometer

Record number: 21, Textual support number: 3 CONT

NASA Scatterometer (NSCAT) was launched on August 16, 1996, aboard the Advanced Earth Observing Satellite (ADEOS), a mission of the National Space Development Agency of Japan.  2, record 21, English, - NASA%20scatterometer

Record 21,  Textual support,  French

Record number: 21, Textual support number: 1 CONT

Depuis août 1996, un nouveau détecteur, le diffusiomètre de la NASA (NSCAT) a été embarqué sur le satellite du Système Avancé d'Observation de la Terre japonais (ADEOS). C'est un diffusiomètre bande Ku et il fournira une information similaire mais avec une meilleure résolution spatiale et temporelle, grâce à sa double fauchée et à sa résolution de 25 km.  2, record 21, French, - diffusiom%C3%A8tre%20de%20la%20NASA

Record number: 21, Textual support number: 2 CONT

Contrairement aux diffusiomètres de la série ERS, qui opèrent en bande C, où l'atténuation par la pluie peut être négligée, les diffusiomètres de la NASA opèrent en bande Ku.  3, record 21, French, - diffusiom%C3%A8tre%20de%20la%20NASA

Record number: 21, Textual support number: 1 OBS

Diffusiomètre : instrument radar de mesure du signal rétrodiffusé par les vagues capillaires à la surface de la mer; il permet [entre autres] la mesure de la vitesse et de la direction du vent depuis l'espace.  4, record 21, French, - diffusiom%C3%A8tre%20de%20la%20NASA

Record 21,  Textual support,  Spanish

Record 22,  Textual support,  English

Record number: 22, Textual support number: 1 CONT

ESA is currently preparing Envisat, Europe's largest remote-sensing satellite to date, for launch. Its payload includes an advanced instrument complement designed to guarantee the continuity of observation started by its predecessors and to meet the global Earth-monitoring requirement on a longer time scale. In particular, the altimetry from Envisat will benefit from the improved performance of a dual frequency Radar Altimeter(RA-2) working in synergy with the Microwave Radiometer(MWR) and Doppler Orbitography and Radiopositioning Integrated by Satellite(DORIS) instruments. The ground processing products that will be available in near-real-time will be as comprehensive as the off-line products, differing only in terms of the availability and quality of the auxiliary data.  2, record 22, English, - dual%20frequency%20radar%20altimeter

Record 22,  Textual support,  French

Record number: 22, Textual support number: 1 CONT

L'Altimètre RA-2 (Radar Altimeter) [...] permet d'étudier en continu la topographie de surface des océans, des terres émergées et des calottes polaires avec une précision instantanée meilleure que 4,5 cm. Il mesure aussi la hauteur des vagues ainsi que la vitesse du vent. (ESA, réalisé par Alenia).  4, record 22, French, - altim%C3%A8tre%20radar%20RA%2D2

Record 22,  Textual support,  Spanish

Record 23,  Textual support,  English

Record number: 23, Textual support number: 1 CONT

Other devices from the lab-automatic tracking radar for the antiaircraft gunners defending London; blind bombing radar that enabled the Allies to bomb in any weather; a microwave early warning system that could detect enemy planes over 100 miles away; and LORAN, a long range navigation system-also played important roles in the Allied victory.  1, record 23, English, - blind%20bombing%20radar

Record 23,  Textual support,  French

Record number: 23, Textual support number: 1 CONT

Dans certaines variantes, des armes de plus gros calibre furent aussi installées, et la tourelle ventrale fût très souvent déposée pour permettre l'installation de matériel électronique comme le radar H2S pour le bombardement sans visibilité.  1, record 23, French, - radar%20pour%20bombardement%20sans%20visibilit%C3%A9

Record 23,  Textual support,  Spanish

Record 24,  Textual support,  English

Record number: 24, Textual support number: 1 CONT

The objectives of the microwave remote sensing experiment were to develop all-weather remote sensing methods, study sensor-object interaction by measurement of ocean surface wave spectra with a two-frequency scatterometer, and verify synthetic aperture radar behavior.  2, record 24, English, - two%2Dfrequency%20scatterometer

Record 24,  Textual support,  French

Record 24,  Textual support,  Spanish

Record 25,  Textual support,  English

Record number: 25, Textual support number: 1 CONT

X-band(9. 5-10. 0 GHz) backscatter at near grazing incidence(0. 2 deg) from the sea off the coast of Kauai, Hawaii, was measured with a radar characterized by a high spatial resolution in range(0. 3 m) and a high temporal resolution(2000 Hz pulse repetition frequency(PRF].... Each type of clutter exhibited the characteristic spiky behavior which has come to be expected from microwave sea backscatter observed at low grazing angles and high range resolutions, while showing, between themselves, marked transmit geometry and polarization dependent contrasts, with the horizontally polarized clutter, measured with an UP transmit geometry, being especially notable for its frequently occurring, significant high frequency spectral content.  2, record 25, English, - sea%20backscatter

Record 25,  Textual support,  French

Record 25,  Textual support,  Spanish

Record 26,  Textual support,  English

Record number: 26, Textual support number: 1 CONT

Giga-tronics Instrument Division produces RF and microwave test equipment including microwave frequency synthesisers, signal sources, generators, sweepers and power measurement instruments in benchtop and VXI bus configurations for use in cellular, PCS, radar, defence, satellite and telecommunication systems test and measurement applications.  1, record 26, English, - microwave%20test%20equipment

Record 26,  Textual support,  French

Record 26,  Textual support,  Spanish

Record 27,  Textual support,  English

Record number: 27, Textual support number: 1 DEF

A sensor that measures the intensity of infrared radiation (720 nm-1500 nm) within a specific field of view.  3, record 27, English, - infrared%20radiometer

Record number: 27, Textual support number: 1 OBS

infrared radiation : Electromagnetic radiation lying in the wavelength interval from about 75 microns to an indefinite upper boundary sometimes arbitrarily set at 1000 microns(0. 01 centimeter). Also called long-wave radiation. At the lower limit of this interval, the infrared radiation spectrum is bounded by visible radiation, whereas on its upper limit it is bounded by microwave radiation of the type important in radar technology.  4, record 27, English, - infrared%20radiometer

Record number: 27, Textual support number: 2 OBS

infrared radiometer: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  5, record 27, English, - infrared%20radiometer

Record 27,  Textual support,  French

Record number: 27, Textual support number: 1 DEF

Instrument de mesure du rayonnement infrarouge réfléchi ou émis par les surfaces.  3, record 27, French, - radiom%C3%A8tre%20infrarouge

Record number: 27, Textual support number: 1 OBS

Le radiomètre [est] un instrument qui mesure quantitativement l'intensité du rayonnement électromagnétique dans certaines bandes de longueurs d'ondes, dans toute partie du spectre électromagnétique. D'ailleurs, on indique habituellement dans quelle partie du spectre le radiomètre est utilisé : radiomètre infrarouge, radiomètre micro-ondes.  4, record 27, French, - radiom%C3%A8tre%20infrarouge

Record number: 27, Textual support number: 2 OBS

Le rayonnement infrarouge (IR) est un rayonnement électromagnétique d'une longueur d'onde supérieure à celle de la lumière visible, mais plus courte que celle des micro-ondes. Le nom signifie «en-deçà du rouge» (du latin infra: «en-deçà de»), le rouge étant la couleur de longueur d'onde la plus longue de la lumière visible. Cette longueur d'onde est comprise entre 700 nm et 1 mm. Les infrarouges sont souvent subdivisés en IR proches (0,7-5 [mu]m) IR moyens (5-30 [mu]m) et IR lointains (30-1000 [mu]m). Toutefois, cette classification n'est pas précise, [...]  5, record 27, French, - radiom%C3%A8tre%20infrarouge

Record number: 27, Textual support number: 3 OBS

radiomètre infrarouge : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, record 27, French, - radiom%C3%A8tre%20infrarouge

Record 27,  Textual support,  Spanish

Record 28,  Textual support,  English

Record number: 28, Textual support number: 1 DEF

Observation done by using a synthetic aperture radar (SAR).  2, record 28, English, - SAR%20observation

Record number: 28, Textual support number: 1 OBS

synthetic aperture radar(SAR) : An active microwave sensor that transmits a focused pulse of radar energy and receives reflected energy from a target in a form that can be converted into a high-resolution image.  3, record 28, English, - SAR%20observation

Record number: 28, Textual support number: 2 OBS

SAR observation: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, record 28, English, - SAR%20observation

Record number: 28, Textual support number: 1 PHR

Multiple incidence angle SAR observation.  2, record 28, English, - SAR%20observation

Record number: 28, Textual support number: 2 PHR

Polarimetric SAR observation.  2, record 28, English, - SAR%20observation

Record 28,  Textual support,  French

Record number: 28, Textual support number: 1 DEF

Observation effectuée à l'aide d'un radar à synthèse d'ouverture (SAR).  2, record 28, French, - observation%20SAR

Record number: 28, Textual support number: 1 OBS

radar à synthèse d'ouverture (SAR) : Un radar à synthèse d'ouverture (SAR) est un radar qui effectue un traitement des données reçues afin d'améliorer la résolution azimutale. Le traitement effectué permet d'affiner l'ouverture de l'antenne. On parle donc de synthèse d'ouverture. D'où le nom de ce type de système. Les radars à synthèse d'ouverture sont donc à opposer aux «radars à ouverture réelle» (RAR ou real aperture radar en anglais) pour lesquelles la résolution azimutale est simplement obtenue en utilisant une antenne d'émission/réception possédant un lobe d'antenne étroit dans la direction azimutale.  3, record 28, French, - observation%20SAR

Record number: 28, Textual support number: 2 OBS

observation SAR : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, record 28, French, - observation%20SAR

Record number: 28, Textual support number: 1 PHR

Observation SAR à angles d'incidence multiples.  2, record 28, French, - observation%20SAR

Record number: 28, Textual support number: 2 PHR

Observation SAR polarimétrique.  2, record 28, French, - observation%20SAR

Record 28,  Textual support,  Spanish

Record 29,  Textual support,  English

Record number: 29, Textual support number: 1 CONT

FRAPPE is a configurable low-bit rate data processing system, primarily designed to process radar altimeter data and microwave sounder data from the ERS satellites [ESA remote sensing satellite].  3, record 29, English, - Flexible%20Radar%20Altimeter%20Processor%20for%20Performance%20Evaluation

Record 29,  Textual support,  French

Record 29,  Textual support,  Spanish

Record 30,  Textual support,  English

Record number: 30, Textual support number: 1 OBS

microwave search radar : term officially approved by the International Civil Aviation Organization(ICAO).  2, record 30, English, - microwave%20search%20radar

Record 30,  Textual support,  French

Record number: 30, Textual support number: 1 OBS

radar de recherche hyperfréquences : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).  2, record 30, French, - radar%20de%20recherche%20hyperfr%C3%A9quences

Record 30,  Textual support,  Spanish

Record number: 30, Textual support number: 1 OBS

radar de exploración por microondas: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).  2, record 30, Spanish, - radar%20de%20exploraci%C3%B3n%20por%20microondas

Record 31,  Textual support,  English

Record number: 31, Textual support number: 1 CONT

The Science and Technology Branch is conducting additional studies on equipment available to RCMP members in view of the recent media controversy surrounding the use of hand held radar sets. Canadian Standards has established a much lower tolerance level for radar emissions than have our counterparts in the USA and Health and Welfare Canada indicates our current radar equipments emit only one fifth the amount of microwave emissions deemed safe by national standards.  1, record 31, English, - hand%20held%20radar%20set

Record 31,  Textual support,  French

Record 31,  Textual support,  Spanish

Record 32,  Textual support,  English

Record number: 32, Textual support number: 1 DEF

A horn used to feed a parabolic reflector in a microwave relay system antenna or radar antenna.  1, record 32, English, - horn%20feed

Record 32,  Textual support,  French

Record number: 32, Textual support number: 1 DEF

Cornet rayonnant utilisé pour illuminer un réflecteur parabolique dans une antenne de faisceau hertzien ou une antenne radar.  1, record 32, French, - source%20primaire%20type%20cornet

Record 32,  Textual support,  Spanish

Record 33,  Textual support,  English

Record number: 33, Textual support number: 1 CONT

The laser(or lidar) velocimeter [lidar=light radar] operates in a fashion entirely analogous to that of the airborne Doppler weather radars likely soon to be available for detecting turbulence in storm cells. As with radars, the device detects air movements by observing the motion of particles suspended in the air and carried with it. The only significant difference is that a beam of coherent infrared radiation is used to scan ahead of the aircraft, instead of a beam(or series of pulses) of radio energy in the considerably longer-wavelength microwave band. The frequency of the back-scattered echoes or reflections undergoes Doppler shift detection by standard heterodyning techniques, which involve comparing the frequency of the reflected illumination with that of the original laser beam. Any reflecting object or material which has motion relative to the transmitter/receiver will cause a detectable shift in frequency, which can be isolated from the transmitter's own proper motion(over the ground) and thus yield a precise indication of the speed at which the air is moving several hundred metres in front of the aircraft. From this data, it is easy to compute what the air speed of the aircraft will be when it reaches that particular patch of air in a few seconds’ time [and hence detect possible turbulence ahead].  2, record 33, English, - laser%20velocimeter

Record 33,  Textual support,  French

Record number: 33, Textual support number: 1 CONT

Le principe de fonctionnement du vélocimètre à laser (ou lidar) est exactement le même que celui des radars météorologiques Doppler de bord, qui doivent être mis en service prochainement pour la détection des turbulences dans les systèmes d'orages.  1, record 33, French, - v%C3%A9locim%C3%A8tre%20%C3%A0%20laser

Record 33,  Textual support,  Spanish

Record 34,  Textual support,  English

Record number: 34, Textual support number: 1 CONT

Primary radar is(...) the original form of radio-detection, in which a beam of microwave energy illuminates a passive or "non-cooperating" target and the reflected pulse or echo is processed to display its bearing and distance from the transmitter(three-dimensional or height-finder radars will also display its altitude, although these are, so far, restricted to military surveillance applications, essentially for reasons of cost, plus the fact that there are alternative means of determining the altitude of aircraft, other than hostile intruders).  1, record 34, English, - passive%20target

Record 34,  Textual support,  French

Record number: 34, Textual support number: 1 CONT

Le radar primaire, c'est (...) la forme originale de la détection électromagnétique: un faisceau de micro-ondes est envoyé sur une cible passive et le signal réfléchi par celle-ci est traité pour en déterminer et faire apparaître sur un écran le relèvement et distance par rapport à l'émetteur (les radars tridimensionnels indiquent en outre l'altitude de la cible mais, essentiellement pour des raisons de coût et parce qu'il est possible de déterminer l'altitude des aéronefs amis par d'autres moyens, leurs applications sont actuellement limitées à la surveillance militaire).  1, record 34, French, - cible%20passive

Record 34,  Textual support,  Spanish

Record 35,  Textual support,  English

Record number: 35, Textual support number: 1 OBS

Space protection systems are usually either of the ultrasonic or radar(microwave) type. They are characterized as alarms because they saturate an enclosed area with a pattern of standing waves-whether of high frequency sound or of radio waves.  1, record 35, English, - space%20protection%20system

Record 35,  Textual support,  French

Record number: 35, Textual support number: 1 OBS

Les systèmes de protection de l'espace sont généralement du genre ultra-sonique ou à radar (hyperfréquence). On les décrit comme alarmes parce qu'ils entourent une superficie d'ondes fixes - qu'elles soient à haute fréquence ou radiotéléphoniques.  1, record 35, French, - syst%C3%A8me%20de%20protection%20de%20l%27espace

Record 35,  Textual support,  Spanish