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DIFFERENTIAL GLOBAL POSITIONING SYSTEM [1 record]

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Alphabetical list of terms

Record 1 2011-09-06

English

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

Differential Global Positioning System (DGPS) is an enhancement Global Positioning System that uses a network of fixed ground based reference stations to broadcast the difference between the positions indicated by the satellite systems and the known fixed positions. These stations broadcast the difference between the measured satellite pseudoranges and actual (internally computed) pseudoranges, and receiver stations may correct their pseudoranges by the same amount. DGPS was especially useful when GPS was still degraded using "Selective Availability," because it could improve accuracy to 5-10 metres. The DGPS network has been mainly developed by the Finnish and Swedish maritime administrations in order to improve safety in the archipelago between the two countries.

OBS

differential global positioning system; DGPS: term and abbreviation recommended by the Terminology Committee and standardized by the Validation Committee of the Sustainable Mobility Glossary.

OBS

differential GPS; DGPS: term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).

French

Domaine(s)
  • Télécommunications par satellite
  • Télédétection
  • Radar, radioguidage et radiogoniométrie
DEF

Système GPS de correction de positionnement qui fonctionne à partir d'une station de référence.

OBS

La station de référence est équipée d'un récepteur, d'un transmetteur et d'une antenne GPS de haute qualité dont on connaît le positionnement de manière précise. Les signaux GPS reçus sont corrigés, puis retransmis localement sur une fréquence prédéterminée. La précision de positionnement peut varier de un à cinq mètres. Cette précision diminue avec l'augmentation de la distance radiale.

OBS

GPS différentiel; DGPS : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

OBS

système mondial de localisation différentiel : terme recommandé par le Comité de terminologie et normalisé par le Comité de validation du Lexique de la mobilité durable.

Spanish

Campo(s) temático(s)
  • Telecomunicaciones por satélite
  • Teledetección
  • Guía radárica, radioguía y radiogoniometría
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