Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models
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 i...
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| Other Authors: | |
| Format: | Conference Paper |
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Springer
2007
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| Online Access: | http://hdl.handle.net/20.500.11937/27499 |
| _version_ | 1848752280561516544 |
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| author | Voigt, C. Denker, H. Hirt, Christian |
| author2 | M Sideris |
| author_facet | M Sideris Voigt, C. Denker, H. Hirt, Christian |
| author_sort | Voigt, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | 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 fr Kartographie und Geodsie (BKG), while the vertical deflections are observed by the Institut fr 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) |
| first_indexed | 2025-11-14T08:06:07Z |
| format | Conference Paper |
| id | curtin-20.500.11937-27499 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:06:07Z |
| publishDate | 2007 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-274992018-03-29T09:08:00Z Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models Voigt, C. Denker, H. Hirt, Christian M Sideris Digital zenith camera system - Deflections of the vertical - Astrogeodetic quasigeoid profile - GPS/levelling data - Quasigeoid models 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 fr Kartographie und Geodsie (BKG), while the vertical deflections are observed by the Institut fr 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) 2007 Conference Paper http://hdl.handle.net/20.500.11937/27499 10.1007/978-3-540-85426-5_49 Springer restricted |
| spellingShingle | Digital zenith camera system - Deflections of the vertical - Astrogeodetic quasigeoid profile - GPS/levelling data - Quasigeoid models Voigt, C. Denker, H. Hirt, Christian Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title | Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title_full | Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title_fullStr | Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title_full_unstemmed | Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title_short | Regional Astrogeodetic Validation of GPS/Levelling Data and Quasigeoid Models |
| title_sort | regional astrogeodetic validation of gps/levelling data and quasigeoid models |
| topic | Digital zenith camera system - Deflections of the vertical - Astrogeodetic quasigeoid profile - GPS/levelling data - Quasigeoid models |
| url | http://hdl.handle.net/20.500.11937/27499 |