Details
| Translated title of the contribution | On the use of the European Gravimetric (Quasi) geoid EGG97 in Germany |
|---|---|
| Original language | German |
| Pages (from-to) | 154-166 |
| Number of pages | 13 |
| Journal | Zeitschrift für Vermessungswesen |
| Volume | 124 |
| Issue number | 5 |
| Publication status | Published - May 1999 |
Abstract
The Institut fur Erdmessung (IfE), University of Hannover, operating as the Computing Center of the IAG Subcommission for the Geoid in Europe, has presented the European Gravimetric (Quasi) Geoid EGG97. This is a high-resolution (1.0'x1,5' grid) quasigeoid model for the continent, with a relative accuracy of ±1...5...20 cm/10...several 100...several 1000 km, in areas with good data coverage and quality. Consequently this solution can be used for transforming GPS heights to normal heights. After a review of previous geoid and quasigeoid calculations for the area of Germany, the strategy for the computation of a 'cm'-geoid is explained, and the EGG97 model is described shortly. Several comparisons with GPS/levelling control points in Germany indicate that a fit of EGG97 to these control points delivers a 'one cm' accuracy over some 100 km, already with simple fitting procedures. A further improvement is possible through more rigorous combination solutions, as soon a homogeneous set of GPS/levelling control points is available.
ASJC Scopus subject areas
- Social Sciences(all)
- Geography, Planning and Development
- Environmental Science(all)
- Water Science and Technology
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In: Zeitschrift für Vermessungswesen, Vol. 124, No. 5, 05.1999, p. 154-166.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Zur Verwendung des Europaischen gravimetrischen quasigeoids EGG97 in Deutschland
AU - Torge, Wolfgang
AU - Denker, Heiner
N1 - Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 1999/5
Y1 - 1999/5
N2 - The Institut fur Erdmessung (IfE), University of Hannover, operating as the Computing Center of the IAG Subcommission for the Geoid in Europe, has presented the European Gravimetric (Quasi) Geoid EGG97. This is a high-resolution (1.0'x1,5' grid) quasigeoid model for the continent, with a relative accuracy of ±1...5...20 cm/10...several 100...several 1000 km, in areas with good data coverage and quality. Consequently this solution can be used for transforming GPS heights to normal heights. After a review of previous geoid and quasigeoid calculations for the area of Germany, the strategy for the computation of a 'cm'-geoid is explained, and the EGG97 model is described shortly. Several comparisons with GPS/levelling control points in Germany indicate that a fit of EGG97 to these control points delivers a 'one cm' accuracy over some 100 km, already with simple fitting procedures. A further improvement is possible through more rigorous combination solutions, as soon a homogeneous set of GPS/levelling control points is available.
AB - The Institut fur Erdmessung (IfE), University of Hannover, operating as the Computing Center of the IAG Subcommission for the Geoid in Europe, has presented the European Gravimetric (Quasi) Geoid EGG97. This is a high-resolution (1.0'x1,5' grid) quasigeoid model for the continent, with a relative accuracy of ±1...5...20 cm/10...several 100...several 1000 km, in areas with good data coverage and quality. Consequently this solution can be used for transforming GPS heights to normal heights. After a review of previous geoid and quasigeoid calculations for the area of Germany, the strategy for the computation of a 'cm'-geoid is explained, and the EGG97 model is described shortly. Several comparisons with GPS/levelling control points in Germany indicate that a fit of EGG97 to these control points delivers a 'one cm' accuracy over some 100 km, already with simple fitting procedures. A further improvement is possible through more rigorous combination solutions, as soon a homogeneous set of GPS/levelling control points is available.
UR - http://www.scopus.com/inward/record.url?scp=0032835077&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:0032835077
VL - 124
SP - 154
EP - 166
JO - Zeitschrift für Vermessungswesen
JF - Zeitschrift für Vermessungswesen
SN - 0340-4560
IS - 5
ER -