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PDOP [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2002-07-31

English

Subject field(s)
  • Aircraft Piloting and Navigation
DEF

The ratio of user-referenced three-dimensional position error to measurement error of a multilateration system. [Definition officially approved by ICAO.]

OBS

PDOP is the root-sum-square of HDOP and VDOP.

OBS

position dilution of precision; PDOP: term and abbreviation officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Pilotage et navigation aérienne
OBS

affaiblissement de la précision de position; PDOP : terme et abréviation uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Pilotaje y navegación aérea
OBS

dilución de precisión de la posición; dilución de la precisión en términos de posición; PDOP: términos y abreviatura aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 1

Record 2 1994-05-31

English

Subject field(s)
  • Mathematical Geography
  • Remote Sensing
DEF

A unitless figure of merit expressing the relationship between the error in user position and the error in satellite position.

OBS

Geometrically, PDOP is proportional to 1 divided by the volume of the pyramid formed by lines running from the receiver to four satellites observed. Values considered "good" for positioning are small, say 3. Values greater than 7 are considered poor. Thus, small PDOP is associated with widely separated satellites. Small PDOP is important in positioning, but much less so in surveying.

OBS

Term and definition provided by the Canadian Hydrographic Service.

French

Domaine(s)
  • Géographie mathématique
  • Télédétection
DEF

Nombre sans unité exprimant la relation entre l'erreur de position de l'utilisateur et l'erreur de position des satellites.

OBS

Du point de vue géométrique, la PDOP est proportionnelle à 1 divisé par le volume de la pyramide formée par les droites reliant un récepteur aux quatre satellites observés. Les valeurs considérées «bonnes» pour la détermination de la position sont faibles, par exemple 3. Des valeurs supérieures à 7 sont jugées mauvaises. Ainsi une faible PDOP est associée à un espacement important des satellites. Une faible PDOP est importante pour le positionnement, mais beaucoup moins en arpentage.

Spanish

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