TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ANGLE ELLIPTICITE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2007-01-31

English

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

When both the amplitude and the phase information are available, it is possible to synthesize the polarization response for all the polarization states. To synthesize the response, phase information and two orthogonal (transmit and receive) polarization states are required. For example, most spaceborne SAR's (e.g. RADARSAT-2) use the HH and VV polarization configuration to satisfy the orthogonality condition. Three dimensional polarization response plots are typically used to illustrate the polarimetry response for a given target. The following conventions are commonly used: The radar response is normalized between 0 and 1 [.] The horizontal axes are the ellipticity angle ... and the orientation angle ... The ellipticity angle ranges between -45° (right circularly polarized) and +45° (left circularly polarized). When [ellipticity angle equals 0°, we have linear polarization. The orientation angle ... is usually defined between -90° and +90°, but is sometimes defined between 0° and +180°.

OBS

ellipticity angle: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

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

Le traitement polarimétrique s'effectuant sur N impulsions, la description moyenne de la cible est alors obtenue par les paramètres d'Euler (m, gamma, tau, nu et psi) dont la signification est la suivante : m représente la magnitude de la cible et correspond à la S.E.R. (surface équivalente radar) maximale que la cible présente quand elle est éclairée par la polarisation caractéristique qui lui est associée; gamma est l'angle de polarisabilité ou l'angle caractéristique de la cible; tau est l'angle d'ellipticité lié à la symétrie ou à la non-symétrie de la cible autour de l'axe de visée du radar; nu représente l'angle de rebond; enfin, psi est l'angle d'orientation de la cible par rapport à la ligne de visée du radar.

OBS

angle d'ellipticité : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Naves espaciales
  • Teledetección
Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Display options

Change the order of display of the official languages of Canada
Option to display the non-official languages (Spanish or Portuguese)
Display definitions, contexts, etc., on records

Features

Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.

Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.

Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.

Date Modified: