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Height Determination by GPS: Accuracy with Respect to Different Geoid Models in Sweden
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för samhällsbyggnad. University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management.
2002 (English)In: Proceedings of the XXII FIG International Congress, Washington, D.C., USA, 2002, p. 106-113Conference paper, Published paper (Refereed)
Abstract [en]

In this paper different gravimetric geoid models have been evaluated: on a regional basis utilising the Swedish GPS reference network SWEPOS; and locally, in a specific research area utilising the results from a GPS campaign conducted in the area.

The research area is situated in central Sweden having a size of approximately 100x300 km. In the area GPS measurements (with average baseline length of 13 km) have been conducted at well established benchmarks with known orthometric heights.

To find out if a geometric geoid model, based on the GPS measurements, would be a better height corrector surface for the research area than the gravimetric geoid models, such a model has been computed with geostatistical methods, i.e. universal kriging. The model has been experimentally evaluated utilising a Swedish GPS campaign called RIX95.

It was found, when the geometric geoid model is used, that the absolute accuracy of GPS levelling is ±14 mm and the relative accuracy ±10 mm (on a 10 km long baseline). It is concluded that the geometric geoid model is the best height corrector surface for the research area among the studied models.

Place, publisher, year, edition, pages
2002. p. 106-113
Keyword [en]
geoid, GPS levelling, kriging, height determination
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:hig:diva-2941ISBN: 87-90907-20-5 (print)OAI: oai:DiVA.org:hig-2941DiVA, id: diva2:119603
Conference
XXII FIG International Congress, April 19-26 2002, Washington, D.C., USA
Available from: 2007-11-23 Created: 2007-11-23 Last updated: 2018-03-13Bibliographically approved

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Mårtensson, Stig-Göran

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Ämnesavdelningen för samhällsbyggnadDepartment of Industrial Development, IT and Land Management
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard-cite-them-right
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf