Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | International Symposium on Earth and Environmental Sciences for Future Generations - Proceedings of the IAG General Assembly |
| Herausgeber/-innen | Laura Sanchez, Jeffrey T. Freymueller |
| Herausgeber (Verlag) | Springer Verlag |
| Seiten | 245-252 |
| Seitenumfang | 8 |
| ISBN (Print) | 9783319691695 |
| Publikationsstatus | Veröffentlicht - 2018 |
| Veranstaltung | International Symposium on Earth and Environmental Sciences for Future Generations, 2015 - Prague, Tschechische Republik Dauer: 22 Juni 2015 → 2 Juli 2015 |
Publikationsreihe
| Name | International Association of Geodesy Symposia |
|---|---|
| Band | 147 |
| ISSN (Print) | 0939-9585 |
Abstract
Local ties are vectors that link reference points of different space geodetic instruments at co-located stations. Discrepancies between local ties and solutions from space geodetic techniques weaken the determination of reference frames. Terrestrially determined local ties and GPS-derived coordinates differences can disagree at the cm-level due to suboptimal GPS processing. In this paper, we propose a post-processing correction strategy to reduce apparent height differences which occur when, unnecessarily, tropospheric delay are estimated between co-located stations or tropospheric constraints between co-located stations are not taken into account. A site-dependent correction factor is determined which stays constant over time and thus can be calibrated. The correction strategy is successfully applied to co-located stations in the pillar network of our institute where the local tie is well-controlled. We find that height discrepancies between levelling survey and post-processed GPS results can be reduced from the centimeter-level to some millimeters. This holds also true for co-located GPS stations of the EUREF Permanent Network.
ASJC Scopus Sachgebiete
- Erdkunde und Planetologie (insg.)
- Computer in den Geowissenschaften
- Erdkunde und Planetologie (insg.)
- Geophysik
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International Symposium on Earth and Environmental Sciences for Future Generations - Proceedings of the IAG General Assembly. Hrsg. / Laura Sanchez; Jeffrey T. Freymueller. Springer Verlag, 2018. S. 245-252 (International Association of Geodesy Symposia; Band 147).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - On Removing Discrepancies Between Local Ties and GPS-Based Coordinates
AU - Schön, S.
AU - Pham, H.
AU - Krawinkel, T.
N1 - Funding information: Acknowledgement We gratefully acknowledge funding from the European Metrology Research Program (EMRP). The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union. We further thank the IGS and CODE for its products and the station operators for providing the GPS data used in the analyses and their support on the local tie information. The comments of the three anonymous reviewers helped to improve the text.
PY - 2018
Y1 - 2018
N2 - Local ties are vectors that link reference points of different space geodetic instruments at co-located stations. Discrepancies between local ties and solutions from space geodetic techniques weaken the determination of reference frames. Terrestrially determined local ties and GPS-derived coordinates differences can disagree at the cm-level due to suboptimal GPS processing. In this paper, we propose a post-processing correction strategy to reduce apparent height differences which occur when, unnecessarily, tropospheric delay are estimated between co-located stations or tropospheric constraints between co-located stations are not taken into account. A site-dependent correction factor is determined which stays constant over time and thus can be calibrated. The correction strategy is successfully applied to co-located stations in the pillar network of our institute where the local tie is well-controlled. We find that height discrepancies between levelling survey and post-processed GPS results can be reduced from the centimeter-level to some millimeters. This holds also true for co-located GPS stations of the EUREF Permanent Network.
AB - Local ties are vectors that link reference points of different space geodetic instruments at co-located stations. Discrepancies between local ties and solutions from space geodetic techniques weaken the determination of reference frames. Terrestrially determined local ties and GPS-derived coordinates differences can disagree at the cm-level due to suboptimal GPS processing. In this paper, we propose a post-processing correction strategy to reduce apparent height differences which occur when, unnecessarily, tropospheric delay are estimated between co-located stations or tropospheric constraints between co-located stations are not taken into account. A site-dependent correction factor is determined which stays constant over time and thus can be calibrated. The correction strategy is successfully applied to co-located stations in the pillar network of our institute where the local tie is well-controlled. We find that height discrepancies between levelling survey and post-processed GPS results can be reduced from the centimeter-level to some millimeters. This holds also true for co-located GPS stations of the EUREF Permanent Network.
KW - GPS
KW - Local ties
KW - Tropospheric delay
UR - http://www.scopus.com/inward/record.url?scp=85037827047&partnerID=8YFLogxK
U2 - 10.1007/1345_2016_238
DO - 10.1007/1345_2016_238
M3 - Conference contribution
AN - SCOPUS:85037827047
SN - 9783319691695
T3 - International Association of Geodesy Symposia
SP - 245
EP - 252
BT - International Symposium on Earth and Environmental Sciences for Future Generations - Proceedings of the IAG General Assembly
A2 - Sanchez, Laura
A2 - Freymueller, Jeffrey T.
PB - Springer Verlag
T2 - International Symposium on Earth and Environmental Sciences for Future Generations, 2015
Y2 - 22 June 2015 through 2 July 2015
ER -