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LONG-BASELINE INTERFEROMETRY [1 record]

Record 1 2011-12-12

English

Subject field(s)
  • Satellite Telecommunications
  • Mathematical Geography
  • Radar, Radio Guidance and Goniometry
DEF

A technique in which radio telescopes hundreds of kilometres apart can be joined electronically to form an array.

OBS

Signals received by the various antennas are brought to a central correlator by means of radio or fibre-optic links. A well-known example is the MERLIN array.

OBS

Long Baseline Interferometry (LBI): term and abbreviation used at Natural Resources Canada - Earth Sciences Sector.

Key term(s)
  • long base-line interferometry

French

Domaine(s)
  • Télécommunications par satellite
  • Géographie mathématique
  • Radar, radioguidage et radiogoniométrie
CONT

L'interférométrie longue base consiste à utiliser au moins deux télescopes indépendants dont on recombine les faisceaux de façon cohérente. C'est le principe utilisé pour obtenir une haute résolution angulaire, supérieure à la limite de diffraction de pupilles uniques.

CONT

[...] l'interférométrie longue base a permis de gagner un ordre de grandeur en résolution angulaire par rapport aux télescopes mono-pupillaires.

OBS

interférométrie à longue base (ILB) : terme et abréviation en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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