Sub-cm-Konsistenz von nivellierten Normalhöhen, GNSS-Positionen und Quasigeoid im Testgebiet Harz

verfasst von: Thomas Krawinkel, Dennis Hücker, Christian Schikschneit, Kerstin Beermann, Jakob Flury, Sibylle Vey, Markus Antoni, Uwe Feldmann-Westendorff
Abstract: Normal heights can be determined without spirit leveling by combining GNSS heights with a quasigeoid model. The resulting accuracy depends on the quality of the quasigeoid model and on the realization of the GNSS heights. Investigations on this topic are timely because of the ongoing modernization of the height system in Germany. In the Harz mountain range, a sub-cm accuracy validation data set has been established in two GNSS campaigns at stations of the first order leveling network. We used height residuals from GNSS heights, GCG05 quasigeoid heights and DHHN92 normal heights to quantify measurement and modeling errors. The residuals have a very low RMS of 4,9 mm. By including two astrogeodetic quasigeoid profiles we could mutually check different types of residuals and show that the largest contribution to the height residuals (typically about 5 mm) is due to station-dependent GNSS errors while the quasigeoid errors are smaller. We conclude that sub-cm consistency of GNSS positioning, normal heights and quasigeoid model can be achieved, even under rather difficult conditions of a mountain range. This seems internationally relevant as for many countries height residuals are reported that are considerably larger which may be due to the inferior quality of fundamental networks.
Organisationseinheit(en): Institut für Erdmessung
Externe Organisation(en): Universität Stuttgart
Landesamt für Geoinformation und Landesvermessung Niedersachsen (LGLN)
Typ: Artikel
Journal: zfv – Zeitschrift für Geodäsie, Geoinformation und Landmanagement
Band: 138
Seiten: 201-209
Anzahl der Seiten: 9
ISSN: 1618-8950
Publikationsdatum: 2013
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Erdkunde und Planetologie (insg.)
Elektronische Version(en): https://geodaesie.info/zfv/zfv-archiv/zfv-138-jahrgang/zfv-2013-3/sub-cm-konsistenz-von-nivellierten-normalhoehen-gnss-positionen-und-quasigeoid-im-testgebiet-harz (Zugang: Offen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@article{a3c145d119de40fb9cc465cf2010decd,
title = "Sub-cm-Konsistenz von nivellierten Normalh{\"o}hen, GNSS-Positionen und Quasigeoid im Testgebiet Harz",
abstract = "Normal heights can be determined without spirit leveling by combining GNSS heights with a quasigeoid model. The resulting accuracy depends on the quality of the quasigeoid model and on the realization of the GNSS heights. Investigations on this topic are timely because of the ongoing modernization of the height system in Germany. In the Harz mountain range, a sub-cm accuracy validation data set has been established in two GNSS campaigns at stations of the first order leveling network. We used height residuals from GNSS heights, GCG05 quasigeoid heights and DHHN92 normal heights to quantify measurement and modeling errors. The residuals have a very low RMS of 4,9 mm. By including two astrogeodetic quasigeoid profiles we could mutually check different types of residuals and show that the largest contribution to the height residuals (typically about 5 mm) is due to station-dependent GNSS errors while the quasigeoid errors are smaller. We conclude that sub-cm consistency of GNSS positioning, normal heights and quasigeoid model can be achieved, even under rather difficult conditions of a mountain range. This seems internationally relevant as for many countries height residuals are reported that are considerably larger which may be due to the inferior quality of fundamental networks.",
keywords = "Geoid, H{\"o}hen, Grundlagennetze, GNSS, Zenitkamera",
author = "Thomas Krawinkel and Dennis H{\"u}cker and Christian Schikschneit and Kerstin Beermann and Jakob Flury and Sibylle Vey and Markus Antoni and Uwe Feldmann-Westendorff",
note = "Das Autorenteam dankt Christian Hirt und Christian Voigt f{\"u}r die Zurverf{\"u}gungstellung der astrogeod{\"a}tischen Quasigeoidprofile, sowie Heiner Denker f{\"u}r das GCG05. Das LGLN stellte Daten der Nivellementlinien bereit und unterst{\"u}tzte die Autoren bei der Analyse. Peter Lembrecht vom LGLN wertete dar{\"u}ber hinaus die aktuellsten Nivellementdaten aus und machte diese f{\"u}r uns verf{\"u}gbar. Die GNSS-Beobachtungsdaten der SAPOS{\textregistered}-Referenzstationen wurden vom LGLN und vom LVermGeo Sachsen-Anhalt kostenlos bereitgestellt. Des Weiteren danken wir der zfv-Schriftleitung und einem anonymen Reviewer f{\"u}r die vielen hilfreichen Anmerkungen, die zur Verbesserung des Manuskripts beigetragen haben.",
year = "2013",
language = "Deutsch",
volume = "138",
pages = "201--209",
journal = "zfv – Zeitschrift f{\"u}r Geod{\"a}sie, Geoinformation und Landmanagement",
issn = "1618-8950",
publisher = "Wissner Verlag",
number = "3",
}