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Transformation of GPS results

  • Bernhard Hofmann-Wellenhof
  • Herbert Lichtenegger
  • James Collins

Abstract

The reference frame of GPS is the World Geodetic System 1984 (WGS-84), cf. Decker (1986). When using GPS, the coordinates of terrestrial sites for example are obtained in the same reference frame. However, the surveyor is not, usually, interested in computing the coordinates of the terrestrial points in a global frame. Rather, the results are preferred in a local coordinate frame either as geodetic (i.e., ellipsoidal) coordinates, as plane coordinates, or as vectors combined with other terrestrial data. Since the WGS-84 is a geocentric system and the local system usually is not, certain transformations are required. The subsequent sections deal with the transformations most frequently used.

Keywords

Local System Similarity Transformation Geoidal Height Equipotential Surface Central Meridian 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 1992

Authors and Affiliations

  • Bernhard Hofmann-Wellenhof
    • 1
  • Herbert Lichtenegger
    • 1
  • James Collins
    • 2
  1. 1.Abteilung für Landesvermessung und LandinformationTechnische Universität GrazGrazAustria
  2. 2.GPS Services, Inc.RockvilleUSA

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