Details
| Original language | English |
|---|---|
| Title of host publication | Observing our Changing Earth |
| Subtitle of host publication | Proceedings of the 2007 IAG General Assembly |
| Editors | Michael G. Sideris |
| Pages | 413-420 |
| Number of pages | 8 |
| Publication status | Published - 2009 |
| Event | 24th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2007 - Perugia, Italy Duration: 2 Jul 2007 → 13 Jul 2007 |
Publication series
| Name | International Association of Geodesy Symposia |
|---|---|
| Volume | 133 |
| ISSN (Print) | 0939-9585 |
Abstract
In the context of a GOCE regional validation and combination experiment in Germany, a work package within the framework of the GOCE-GRAND II project, gravity observations, vertical deflections and GPS/levelling data are collected as independent data sets. The observation of absolute gravity values is carried out by the Bundesamt für Kartographie und Geodäsie (BKG), while the vertical deflections are observed by the Institut für Erdmessung (IfE) using the Hannover digital transportable zenith camera system TZK2-D. The vertical deflections have an accuracy of approx. 0.1 arc seconds and are arranged along a North-South and East-West profile. The two profiles have a length of about 500 km each with a spacing of 2.5-5 km between adjacent stations. Furthermore, a national GPS and levelling data set of about 900 stations with an accuracy of approx. 1 cm is available for Germany. The analysis of the vertical deflections is carried out by the astronomical levelling method, resulting in two (quasi)geoid profiles. The accuracy of the profiles is expected to be at the cm level. A cross-validation of both the vertical deflection and GPS/levelling data is realised by traversing the profiles through all nearby GPS/levelling stations (approx. 40 in total). In addition, comparisons are performed with the German Combined QuasiGeoid 2005 (GCG05) and the purely gravimetric solution EGG07 (European Gravimetric Quasigeoid 2007).
Keywords
- Astrogeodetic quasigeoid profile, Deflections of the vertical, Digital zenith camera system, GPS/levelling data, Quasigeoid models
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
- Geophysics
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Observing our Changing Earth : Proceedings of the 2007 IAG General Assembly. ed. / Michael G. Sideris. 2009. p. 413-420 (International Association of Geodesy Symposia; Vol. 133).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models
AU - Voigt, Christian
AU - Denker, Heiner
AU - Hirt, Christian
N1 - Copyright: Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - In the context of a GOCE regional validation and combination experiment in Germany, a work package within the framework of the GOCE-GRAND II project, gravity observations, vertical deflections and GPS/levelling data are collected as independent data sets. The observation of absolute gravity values is carried out by the Bundesamt für Kartographie und Geodäsie (BKG), while the vertical deflections are observed by the Institut für Erdmessung (IfE) using the Hannover digital transportable zenith camera system TZK2-D. The vertical deflections have an accuracy of approx. 0.1 arc seconds and are arranged along a North-South and East-West profile. The two profiles have a length of about 500 km each with a spacing of 2.5-5 km between adjacent stations. Furthermore, a national GPS and levelling data set of about 900 stations with an accuracy of approx. 1 cm is available for Germany. The analysis of the vertical deflections is carried out by the astronomical levelling method, resulting in two (quasi)geoid profiles. The accuracy of the profiles is expected to be at the cm level. A cross-validation of both the vertical deflection and GPS/levelling data is realised by traversing the profiles through all nearby GPS/levelling stations (approx. 40 in total). In addition, comparisons are performed with the German Combined QuasiGeoid 2005 (GCG05) and the purely gravimetric solution EGG07 (European Gravimetric Quasigeoid 2007).
AB - In the context of a GOCE regional validation and combination experiment in Germany, a work package within the framework of the GOCE-GRAND II project, gravity observations, vertical deflections and GPS/levelling data are collected as independent data sets. The observation of absolute gravity values is carried out by the Bundesamt für Kartographie und Geodäsie (BKG), while the vertical deflections are observed by the Institut für Erdmessung (IfE) using the Hannover digital transportable zenith camera system TZK2-D. The vertical deflections have an accuracy of approx. 0.1 arc seconds and are arranged along a North-South and East-West profile. The two profiles have a length of about 500 km each with a spacing of 2.5-5 km between adjacent stations. Furthermore, a national GPS and levelling data set of about 900 stations with an accuracy of approx. 1 cm is available for Germany. The analysis of the vertical deflections is carried out by the astronomical levelling method, resulting in two (quasi)geoid profiles. The accuracy of the profiles is expected to be at the cm level. A cross-validation of both the vertical deflection and GPS/levelling data is realised by traversing the profiles through all nearby GPS/levelling stations (approx. 40 in total). In addition, comparisons are performed with the German Combined QuasiGeoid 2005 (GCG05) and the purely gravimetric solution EGG07 (European Gravimetric Quasigeoid 2007).
KW - Astrogeodetic quasigeoid profile
KW - Deflections of the vertical
KW - Digital zenith camera system
KW - GPS/levelling data
KW - Quasigeoid models
UR - http://www.scopus.com/inward/record.url?scp=84884392320&partnerID=8YFLogxK
U2 - 10.1007/978-3-540-85426-5_49
DO - 10.1007/978-3-540-85426-5_49
M3 - Conference contribution
AN - SCOPUS:84884392320
SN - 9783540854258
T3 - International Association of Geodesy Symposia
SP - 413
EP - 420
BT - Observing our Changing Earth
A2 - Sideris, Michael G.
T2 - 24th General Assembly of the International Union of Geodesy and Geophysics, IUGG 2007
Y2 - 2 July 2007 through 13 July 2007
ER -