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Journal of Applied Geodesy

Editor-in-Chief: Kahmen, Heribert / Rizos, Chris


CiteScore 2018: 1.61

SCImago Journal Rank (SJR) 2018: 0.532
Source Normalized Impact per Paper (SNIP) 2018: 1.064

Online
ISSN
1862-9024
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Volume 9, Issue 1

Issues

An Innovative Dual Frequency PPP Model for Combined GPS/Galileo Observations

Akram Afifi / Ahmed El-Rabbany
Published Online: 2015-03-14 | DOI: https://doi.org/10.1515/jag-2014-0009

Abstract

This paper develops a new dual-frequency precise point positioning model, which combines GPS and Galileo observables. The addition of Galileo satellite system offers more visible satellites to the user, which is expected to enhance the satellite geometry and the overall PPP solution in comparison with GPS-only PPP solution. However, combining GPS and Galileo observables introduces additional biases, which require rigorous modelling, including the GPS to Galileo time offset, and Galileo satellite hardware delay. In this research, a GPS/Galileo ionosphere-free linear combination PPP model is developed. The additional biases of the GPS/Galileo combination are lumped and accounted for through the introduction of a new unknown parameter, inter-systems bias, in the PPP mathematical model. It is shown that a subdecimeter positioning accuracy level and 25% reduction in the solution convergence time can be achieved with the developed GPS/Galileo PPP model.

Keywords: PPP; GPS; Galileo; GNSS; Dual frequency; GGTO

About the article

Received: 2014-04-29

Accepted: 2014-09-11

Published Online: 2015-03-14

Published in Print: 2015-03-01


Citation Information: Journal of Applied Geodesy, Volume 9, Issue 1, Pages 27–34, ISSN (Online) 1862-9024, ISSN (Print) 1862-9016, DOI: https://doi.org/10.1515/jag-2014-0009.

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Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

[1]
Jacek Paziewski, Rafal Sieradzki, and Pawel Wielgosz
Remote Sensing, 2018, Volume 10, Number 2, Page 208
[2]
A. Afifi and A. El-Rabbany
Journal of Geodetic Science, 2017, Volume 7, Number 1, Page 1
[3]
Akram Afifi and Ahmed El-Rabbany
Sensors, 2016, Volume 16, Number 6, Page 779
[5]
Akram Afifi and Ahmed El-Rabbany
Sensors, 2015, Volume 15, Number 6, Page 14701
[6]
Akram Afifi and Ahmed El-Rabbany
Positioning, 2015, Volume 06, Number 02, Page 7

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