Analysis of the accuracy of EGNOS+SDCM positioning in aerial navigation

Magda Mrozik; Jarosław Kozuba; Kamil Krasuski; Janusz Ćwiklak; Mieczysław Bakuła; Adam Ciećko; Grzegorz Grunwald; Adam Wierzbicki

doi:10.5604/01.3001.0016.2028

Authors

Magda Mrozik Silesian University of Technology, Faculty of Transport and Aviation Engineering, Katowice Author https://orcid.org/0000-0003-4496-8331
Jarosław Kozuba Silesian University of Technology, Faculty of Transport and Aviation Engineering, Katowice Author https://orcid.org/0000-0003-3394-4270
Kamil Krasuski Polish Air Force University, Institute of Navigation, Dęblin Author https://orcid.org/0000-0001-9821-4450
Janusz Ćwiklak Polish Air Force University, Institute of Navigation, Dęblin Author https://orcid.org/0000-0001-5538-0440
Mieczysław Bakuła Polish Air Force University, Institute of Navigation, Dęblin Author https://orcid.org/0000-0002-7180-8483
Adam Ciećko University of Warmia and Mazury, Faculty of Geoengineering, Olsztyn Author https://orcid.org/0000-0002-3984-0846
Grzegorz Grunwald University of Warmia and Mazury, Faculty of Geoengineering, Olsztyn Author https://orcid.org/0000-0001-9252-7624
Adam Wierzbicki Military University of Technology, Faculty of Civil Engineering and Geodesy, Warszawa Author https://orcid.org/0000-0001-6192-3894

DOI:

https://doi.org/10.5604/01.3001.0016.2028

Keywords:

aerial navigation, accuracy parameter, SBAS, EGNOS, SDCM, RMS-3D

Abstract

The article presents a modified scheme of determining the accuracy parameter of SBAS (Satellite Based Augmentation System) positioning with use of two supporting systems: EGNOS (European Geostationary Navigation Overlay Service) and SDCM (System of Differential Correction and Monitoring). The proposed scheme is based on the weighted mean model, which combines single solutions of EGNOS and SDCM positions in order to calculate the accuracy of positioning of the aerial vehicle. The applied algorithm has been tested in a flight experiment conducted in 2020 in north-eastern Poland. The phase of approach to landing of a Diamond DA 20-C1 aircraft at the EPOD airport (European Poland Olsztyn Dajtki) was subjected to numerical analysis. The Septentrio AsterRx2i geodesic receiver was installed on board of the aircraft to collect and record GPS (Global Positioning System) observations to calculate the navigation position of the aircraft. In addition, the EGNOS and SDCM corrections in the “*.ems” format were downloaded from the real time server data. The computations were realized in RTKPOST library of the RTKLIB v.2.4.3 software and also in SciLab application. Based on the conducted research, it was found that the accuracy of aircraft positioning from the EGNOS+SDCM solution ranged from -1.63 m to +3.35 m for the ellipsoidal coordinates BLh. Additionally, the accuracy of determination of the ellipsoidal height h was 1÷28% higher in the weighted mean model than in the arithmetic mean model. On the other hand, the accuracy of determination of the ellipsoidal height h was 1÷28% higher in the weighted mean model than for the single EGNOS solution. Additionally, the weighted mean model reduced the resultant error of the position RMS-3D by 1÷13% in comparison to the arithmetic mean model. The mathematical model used in this study proved to be effective in the analysis of the accuracy of SBAS positioning in aerial navigation.

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