Pawel Wielgosz

TL;DR: This study presents the results and the methodology for estimation and accounting for phase and code GPS-Galileo inter-system bias in precise relative positioning and examines the influence of accounting for the inter- system bias on the user position solution.

TL;DR: In this article, the authors present the analyses of the network-derived ionospheric correction accuracy under extremely varying -quiet and stormy - geomagnetic and ionosphere conditions and investigate the influence of the correction accuracy on the instantaneous (single-epoch) and on-the-fly (OTF) AR in long-range RTK GPS positioning.

TL;DR: In this article, the properties of the ionospheric electron density profiles retrieved from COSMIC radio occultation measurements were compared with ground-based measurements, and it was shown that COS MIC profiles are usually in good agreement with ionosonde profiles, both in the F2 layer peak electron density and the bottom side of the profiles.

TL;DR: In this article, the authors demonstrate the concept and practical examples of instantaneous mapping of regional ionosphere, based on GPS observations from the State of Ohio continuously operating reference stations (CORS) network, using interpolation/prediction techniques such as kriging (KR) and the Multiquadric Model (MQ), which are suitable for handling multi-scale phenomena and unevenly distributed data, were used to create total electron content (TEC) maps.

TL;DR: The results indicate that tightly combined GPS + Galileo instantaneous positioning has a clear advantage over single-system solutions and provides an accurate and reliable solution.