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| Titel |
Accuracy Assessment for PPP by Comparing Various Online PPP Service Solutions with Bernese 5.2 Network Solution |
| VerfasserIn |
Sureyya Ozgur Uygur, Cüneyt Aydın, Deniz Oz Demir, Seda Cetin, Ugur Dogan |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127248
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| Publikation (Nr.) |
 EGU/EGU2016-7102.pdf |
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| Zusammenfassung |
| GNSS precise point positioning (PPP) technique is frequently used for geodetic applications
such as monitoring of reference stations and estimation of tropospheric parameters. This
technique uses the undifferenced GNSS observations along with the IGS products to reach
high level positioning accuracy. The accuracy level depends on the GNSS data quality as
well as the length of the observation duration and the quality of the external data
products. It is possible to reach the desired positioning accuracy in the reference
frame of satellite coordinates by using a single receiver GNSS data applying PPP
technique.
PPP technique is provided to users by scientific GNSS processing software packages
(like GIPSY of NASA-JPL and Bernese Processing Software of AIUB) as well as
several online PPP services. The related services are Auto-GIPSY provided by JPL
California Institute of Technology, CSRS-PPP provided by Natural Resources Canada,
GAPS provided by the University of New Brunswick and Magic-PPP provided by
GMV.
In this study, we assess the accuracy of PPP by comparing the solutions from the
online PPP services with Bernese 5.2 network solutions. Seven days (DoY 256-262
in 2015) of GNSS observations with 24 hours session duration on the CORS-TR
network in Turkey collected on a set of 14 stations were processed in static mode
using the above-mentioned PPP services. The average of daily coordinates from
Bernese 5.2 static network solution related to 12 IGS stations were taken as the true
coordinates.
Our results indicate that the distributions of the north, east and up daily position
differences are characterized by means and RMS of 1.9±0.5, 2.1±0.7, 4.7±2.1 mm for
CSRS, 1.6±0.6, 1.4±0.8, 5.5±3.9 mm for Auto-GIPSY, 3.0±0.8, 3.0±1.2, 6.0±3.2 mm for
Magic GNSS, 2.1±1.3, 2.8±1.7, 5.0±2.3 mm for GAPS, with respect to Bernese 5.2
network solution.
Keywords: PPP, Online GNSS Service, Bernese, Accuracy |
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