Details
| Translated title of the contribution | Sub-cm consistency of leveled normal heights, GNSS positions and quasigeoid in the Harz test area |
|---|---|
| Original language | German |
| Pages (from-to) | 201-209 |
| Number of pages | 9 |
| Journal | zfv – Zeitschrift für Geodäsie, Geoinformation und Landmanagement |
| Volume | 138 |
| Issue number | 3 |
| Publication status | Published - 2013 |
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.
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In: zfv – Zeitschrift für Geodäsie, Geoinformation und Landmanagement, Vol. 138, No. 3, 2013, p. 201-209.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Sub-cm-Konsistenz von nivellierten Normalhöhen, GNSS-Positionen und Quasigeoid im Testgebiet Harz
AU - Krawinkel, Thomas
AU - Hücker, Dennis
AU - Schikschneit, Christian
AU - Beermann, Kerstin
AU - Flury, Jakob
AU - Vey, Sibylle
AU - Antoni, Markus
AU - Feldmann-Westendorff, Uwe
N1 - Das Autorenteam dankt Christian Hirt und Christian Voigt für die Zurverfügungstellung der astrogeodätischen Quasigeoidprofile, sowie Heiner Denker für das GCG05. Das LGLN stellte Daten der Nivellementlinien bereit und unterstützte die Autoren bei der Analyse. Peter Lembrecht vom LGLN wertete darüber hinaus die aktuellsten Nivellementdaten aus und machte diese für uns verfügbar. Die GNSS-Beobachtungsdaten der SAPOS®-Referenzstationen wurden vom LGLN und vom LVermGeo Sachsen-Anhalt kostenlos bereitgestellt. Des Weiteren danken wir der zfv-Schriftleitung und einem anonymen Reviewer für die vielen hilfreichen Anmerkungen, die zur Verbesserung des Manuskripts beigetragen haben.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - Geoid
KW - Höhen
KW - Grundlagennetze
KW - GNSS
KW - Zenitkamera
UR - http://www.scopus.com/inward/record.url?scp=84879368238&partnerID=8YFLogxK
M3 - Artikel
AN - SCOPUS:84879368238
VL - 138
SP - 201
EP - 209
JO - zfv – Zeitschrift für Geodäsie, Geoinformation und Landmanagement
JF - zfv – Zeitschrift für Geodäsie, Geoinformation und Landmanagement
SN - 1618-8950
IS - 3
ER -