TERMIUM Plus®

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

DOPPLER COMPENSATION [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2001-05-09

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Telecommunications Transmission
  • Audio Technology
  • Air Transport
CONT

As you probably know, the GHRS automatically corrects observations for the effects of the motion of the HST spacecraft. This correction is done in real time as an exposure is in progress. Every minute a new shift is calculated and if necessary a change in the deflection of the spectrum is made. These onboard corrections cannot be removed after the fact except as an overall shift of the spectrum, but the net doppler compensation applied is stored in the data header. As in the case of a heliocentric correction to radial velocity, the doppler compensation is calculated from the position of the object relative to the vector of motion of the spacecraft.

CONT

Probably an automatic Doppler effect compensation is used: when approaching the object, the questioning signal becomes shorter and the impulse sequence faster. The sound volume can also be varied in order to detect more distant objects or sound-absorbing objects.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Transmission (Télécommunications)
  • Électroacoustique
  • Transport aérien
CONT

Utilisez un oscillateur externe tel que le VXO F1BBU003 avec celui-ci vous obtiendrez une excellente stabilité avec un réglage continu de la fréquence ce qui peu être utile pour la compensation de l'effet doppler pour le suivi d'un satellite.

Spanish

Campo(s) temático(s)
  • Guía radárica, radioguía y radiogoniometría
  • Transmisión (Telecomunicaciones)
  • Electroacústica
  • Transporte aéreo
DEF

Método para sincronizar la fase y la frecuencia de las señales que se intercambian con vehículos que se desplazan a velocidades superiores a 250 Km.

OBS

Este método es utilizado por el sistema GSM (sistema Global de Comunicaciones Móviles) de telefonía móvil (ver: efecto Doppler).

Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2024
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: