TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

The local orbital reference system is defined at each point of the orbit by three unit vectors. These vectors are derived from the satellite position and velocity vectors: Vector L is colinear with position vector P (on the axis between the Earth’s centre and the satellite). It defines the yaw axis. Vector T is perpendicular to the orbital plane (vector L, vector V). It defines the pitch axis. Vector R completes the set of orthogonal axes. It lies in the plane defined by Vectors L and V and defines the roll axis. It does not coincide exactly with the velocity vector due to the eccentricity of the orbit.  3, fiche 1, Anglais, - roll%20axis

Record number: 1, Textual support number: 2 CONT

Spacecraft axes. The three orthogonal axes of rotation : roll, pitch and yaw. If the spacecraft has a recognisable longitudinal axis or a specified forward direction of flight, the axes are analogous to those of an aircraft, where the roll axis is the longitudinal axis; the pitch axis is in the plane of the wings; and the yaw axis is the "vertical" axis, orthogonal to both the roll and pitch axes. The axes are mutually perpendicular, with an "origin" at the vehicle's centre of mass. For a winged spacecraft such as a Space Shuttle, the similarity with an aircraft is obvious. For expendable launch vehicles the roll axis is the axis which is vertical at launch and the other axes are more-or-less arbitrarily assigned since the vehicle rotates about the roll axis in flight.... The axes of a cylindrical spacecraft(e. g. Apollo, Suyuz, etc.) are similar to those of an ELV [Expendable Launch Vehicle] at launch, but one orbit assume the axis-definition of an aircraft(i. e. defined relative to the pilot's seat). The axes of a satellite mirror those of an aircraft "flying along the orbital arc" : the roll axis is aligned with the direction of travel; the yaw axis passes through the sub-satellite point; and the pitch axis is orthogonal to the other two. For a satellite in an equatorial orbit, the pitch axis is aligned approximately with the Earth's spin axis. The pitch axis is also the spin axis for the spin-stabilised satellite.  4, fiche 1, Anglais, - roll%20axis

Record number: 1, Textual support number: 1 OBS

In the compilation of engineering drawings the three orthogonal axes are often labelled in Cartesian fashion: x=roll, y=pitch, z=yaw. For the three-axis stabilised spacecraft, the x-axis and y-axis are otherwise known as the east-west and north-south axes, respectively; the z-axis passes through the sub-satellite point. This leads to the definition of the box-shaped satellite’s faces as follows: the "plus-x face" faces east; the "minus-x face" faces west; +y faces south; -y faces north; +z is the Earth-pointing face; and -z is the "anti-Earth face."  4, fiche 1, Anglais, - roll%20axis

Record number: 1, Textual support number: 2 OBS

roll axis; axis of roll: terms officially approved by the International Space Station official approval Group (ISSOAG) and by the RADARSAT-2 Terminology Approval Group (RTAG).  5, fiche 1, Anglais, - roll%20axis

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 CONT

Le repère orbital local est défini en chaque point de l'orbite par les trois vecteurs unitaires. Ces vecteurs sont construits à partir du vecteur position et du vecteur vitesse du satellite : le vecteur L est colinéaire au vecteur position P (sur l'axe centre Terre, satellite). Il définit l'axe de lacet. Le vecteur T est perpendiculaire au plan de l'orbite (vecteur L, vecteur V). Il définit l'axe de tangage. Le vecteur R complète le trièdre. Il appartient au plan (vecteur L, vecteur V) et définit l'axe de roulis. Il ne coïncide pas exactement avec le vecteur vitesse à cause de l'excentricité de l'orbite.  1, fiche 1, Français, - axe%20de%20roulis

Record number: 1, Textual support number: 1 OBS

axe de roulis : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI) et par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  2, fiche 1, Français, - axe%20de%20roulis

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

The local orbital reference system is defined at each point of the orbit by three unit vectors. These vectors are derived from the satellite position and velocity vectors: Vector L is colinear with position vector P (on the axis between the Earth’s centre and the satellite). It defines the yaw axis. Vector T is perpendicular to the orbital plane (vector L, vector V). It defines the pitch axis. Vector R completes the set of orthogonal axes. It lies in the plane defined by Vectors L and V and defines the roll axis. It does not coincide exactly with the velocity vector due to the eccentricity of the orbit.  2, fiche 2, Anglais, - pitch%20axis

Record number: 2, Textual support number: 2 CONT

Spacecraft axes. The three orthogonal axes of rotation : roll, pitch and yaw. If the spacecraft has a recognisable longitudinal axis or a specified forward direction of flight, the axes are analogous to those of an aircraft, where the roll axis is the longitudinal axis; the pitch axis is in the plane of the wings; and the yaw axis is the "vertical" axis, orthogonal to both the roll and pitch axes. The axes are mutually perpendicular, with an "origin" at the vehicle's centre of mass. For a winged spacecraft such as a Space Shuttle, the similarity with an aircraft is obvious. For expendable launch vehicles the roll axis is the axis which is vertical at launch and the other axes are more-or-less arbitrarily assigned since the vehicle rotates about the roll axis in flight.... The axes of a cylindrical spacecraft(e. g. Apollo, Suyuz, etc.) are similar to those of an ELV [Expendable Launch Vehicle] at launch, but one orbit assume the axis-definition of an aircraft(i. e. defined relative to the pilot's seat). The axes of a satellite mirror those of an aircraft "flying along the orbital arc" : the roll axis is aligned with the direction of travel; the yaw axis passes through the sub-satellite point; and the pitch axis is orthogonal to the other two. For a satellite in an equatorial orbit, the pitch axis is aligned approximately with the Earth's spin axis. The pitch axis is also the spin axis for the spin-stabilised satellite.  3, fiche 2, Anglais, - pitch%20axis

Record number: 2, Textual support number: 1 OBS

In the compilation of engineering drawings the three orthogonal axes are often labelled in Cartesian fashion: x=roll, y=pitch, z=yaw. For the three-axis stabilised spacecraft, the x-axis and y-axis are otherwise known as the east-west and north-south axes, respectively; the z-axis passes through the sub-satellite point. This leads to the definition of the box-shaped satellite’s faces as follows: the "plus-x face" faces east; the "minus-x face" faces west; +y faces south; -y faces north; +z is the Earth-pointing face; and -z is the "anti-Earth face."  3, fiche 2, Anglais, - pitch%20axis

Record number: 2, Textual support number: 2 OBS

pitch axis: term officially approved by the International Space Station official approval Group (ISSOAG) and by the RADARSAT-2 Terminology Approval Group (RTAG).  4, fiche 2, Anglais, - pitch%20axis

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

Le repère orbital local est défini en chaque point de l'orbite par les trois vecteurs unitaires. Ces vecteurs sont construits à partir du vecteur position et du vecteur vitesse du satellite : Le vecteur L est colinéaire au vecteur position P (sur l'axe centre Terre, satellite). Il définit l'axe de lacet. Le vecteur T est perpendiculaire au plan de l'orbite (vecteur L, vecteur V). Il définit l'axe de tangage. Le vecteur R complète le trièdre. Il appartient au plan (vecteur L, vecteur V) et définit l'axe de roulis. Il ne coïncide pas exactement avec le vecteur vitesse à cause de l'excentricité de l'orbite.  2, fiche 2, Français, - axe%20de%20tangage

Record number: 2, Textual support number: 1 OBS

axe de tangage : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI) et par le Groupe de travail de la terminologie de RADARSAT-2.  3, fiche 2, Français, - axe%20de%20tangage

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 DEF

A sensor made up of a linear detector array of CCDs (Charge Coupled Devices) that obtains data in the platform’s direction of motion (azimuth or along-track dimension).  2, fiche 3, Anglais, - along%2Dtrack%20scanner

Record number: 3, Textual support number: 1 CONT

Along-track scanners also use the forward motion of the platform to record successive scan lines and build up a two-dimensional image, perpendicular to the flight direction. However, instead of a scanning mirror, they use a linear array of detectors located at the focal plane of the image formed by lens systems, which are "pushed" along in the flight track direction(i. e. along track). These systems are also referred to as pushbroom scanners, as the motion of the detector array is analogous to the bristles of a broom being pushed along a floor.  3, fiche 3, Anglais, - along%2Dtrack%20scanner

Record number: 3, Textual support number: 1 OBS

The sensor’s instantaneous field of view extends the length of the swath width.  2, fiche 3, Anglais, - along%2Dtrack%20scanner

Record number: 3, Textual support number: 2 OBS

along-track scanner; pushbroom scanner: terms officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  4, fiche 3, Anglais, - along%2Dtrack%20scanner

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 DEF

Capteur constitué d'une barrette de DTC (dispositifs à transfert de charge) qui collecte des données dans le sens de l'orbite de la plate-forme (en azimut ou en trajectoire longitudinale).  2, fiche 3, Français, - dispositif%20de%20balayage%20longitudinal

Record number: 3, Textual support number: 1 OBS

Principe de fonctionnement d'un système à barrette de détecteurs. [...] Le balayage est donc longitudinal à la manière d'un balai poussé devant soi, d'où l'expression «push broom» employée par certains auteurs. Comme les détecteurs sont tous de la même dimension et disposés parallèlement au sol, les tachèles sur le terrain sont également identiques s'il n'y a pas de distorsions optiques dans l'objectif.  3, fiche 3, Français, - dispositif%20de%20balayage%20longitudinal

Record number: 3, Textual support number: 2 OBS

Le balayage perpendiculaire à la trajectoire ratisse la Terre en une série de lignes. Le balayage s'effectue d'un côté du capteur à l'autre, en utilisant un miroir rotatif. La radiation atteignant le capteur est divisée en plusieurs composantes spectrales qui sont détectées séparément. L'UV, le visible, le proche infrarouge et l'infrarouge sont séparés selon leurs longueurs d'onde. Un ensemble de détecteurs internes, sensibles à chacune des bandes spectrales, mesurent et enregistrent l'énergie en convertissant le signal électrique produit par les détecteurs en données numériques.  4, fiche 3, Français, - dispositif%20de%20balayage%20longitudinal

Record number: 3, Textual support number: 3 OBS

dispositif de balayage longitudinal : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  1, fiche 3, Français, - dispositif%20de%20balayage%20longitudinal

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Français

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 DEF

Perpendicular, or some concept analogous to it.  2, fiche 5, Anglais, - orthogonal

Fiche 5,  Justifications,  Français

Record number: 5, Textual support number: 1 DEF

Qui forme un angle droit.  2, fiche 5, Français, - orthogonal

Record number: 5, Textual support number: 1 PHR

affinité, arcs, automorphisme, base, carrés, cercles, courbe, famille, groupe, matrice, plan, polynômes, projecteur, repère, somme directe, supplémentaire, symétrie, trajectoire, vecteur orthogonal.  2, fiche 5, Français, - orthogonal

Fiche 5,  Justifications,  Espagnol