Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution
This paper presents an algorithm for determining the precision parameter for aircraft position coordinates based on a combined GPS/EGNOS and GPS/SDCM solution. The proposed algorithm uses a weighted average model that com-bines a single GPS/EGNOS and GPS/SDCM position navigation solution to determin...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Transport, Warsaw University of Technology
2023-09-01
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| Series: | Archives of Transport |
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| Online Access: | http://aot.publisherspanel.com/gicid/01.3001.0053.7264 |
| _version_ | 1797784196107730944 |
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| author | Kamil Krasuski Marta Lalak Paweł Gołda Adam Ciećko Grzegorz Grunwald Magda Mrozik Jarosław Kozuba |
| author_facet | Kamil Krasuski Marta Lalak Paweł Gołda Adam Ciećko Grzegorz Grunwald Magda Mrozik Jarosław Kozuba |
| author_sort | Kamil Krasuski |
| collection | DOAJ |
| description | This paper presents an algorithm for determining the precision parameter for aircraft position coordinates based on a combined GPS/EGNOS and GPS/SDCM solution. The proposed algorithm uses a weighted average model that com-bines a single GPS/EGNOS and GPS/SDCM position navigation solution to determine the resulting aircraft coordi-nates. The weighted mean model include the linear coefficients as a function of: the inverse of the number of tracked GPS satellites for which EGNOS and SDCM corrections have been generated, and the inverse of the geometric coeffi-cient of the PDOP (Position Dilution of Precision). The corrections between the single GPS/EGNOS and GPS/SDCM solution to the aircraft's resultant coordinates are then calculated on this basis. Finally, the standard deviation for the aircraft resultant BLh (B-Latitude, L-Longitude, h- ellipsoidal height) coordinates is calculated as a measure of preci-sion. The research experiment used recorded on-board GPS+SBAS data from two GNSS receivers mounted on a Dia-mond DA 20-C1 aircraft. The test flight was carried out on the Olsztyn-Suwaki-Olsztyn route. The calculations of aircraft position based on GPS/EGNOS and GPS/SDCM solution were performed in the RTKLIB v.2.4.3 program in the RTKPOST module. Next, aircraft resultant coordinates and standard deviations were computed in Scilab v.6.0.0 soft-ware package. Based on the tests performed, it was found that for the Trimble Alloy receiver, the standard deviation values for the ellipsoidal coordinates BLh of the aircraft do not exceed 1.77 m. However, for the Septentrio AsterRx2i receiver, the values of standard deviations for the aircraft's ellipsoidal BLh coordinates do not exceed 5.04 m. The use of linear coefficients as the inverse of the number of tracked GPS satellites with SBAS corrections in the GPS/EGNOS+GPS/SDCM positioning model resulted in a reduction in standard deviations of approximately 50-51% relative to the solution with linear coefficients calculated as the inverse of the PDOP parameter. In paper, the standard deviation was also obtained using arithmetic mean model. However the values of standard deviation from weighted mean model are lower than arithmetic mean model. |
| first_indexed | 2024-03-13T00:36:30Z |
| format | Article |
| id | doaj.art-2426f57d18ff4d49a4fc81661c2ba771 |
| institution | Directory Open Access Journal |
| issn | 0866-9546 2300-8830 |
| language | English |
| last_indexed | 2024-03-13T00:36:30Z |
| publishDate | 2023-09-01 |
| publisher | Faculty of Transport, Warsaw University of Technology |
| record_format | Article |
| series | Archives of Transport |
| spelling | doaj.art-2426f57d18ff4d49a4fc81661c2ba7712023-07-09T18:58:29ZengFaculty of Transport, Warsaw University of TechnologyArchives of Transport0866-95462300-88302023-09-0167310511710.5604/01.3001.0053.726401.3001.0053.7264Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solutionKamil Krasuski0Marta Lalak1Paweł Gołda2Adam Ciećko3Grzegorz Grunwald4Magda Mrozik5Jarosław Kozuba6Faculty of Aviation, Polish Air Force University, Dęblin, PolandFaculty of Aviation, Polish Air Force University, Dęblin, PolandFaculty of Aviation, Polish Air Force University, Dęblin, PolandFaculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, PolandFaculty of Geoengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, PolandSilesian University of Technology, Faculty of Transport and Aviation Engineering, Gliwice, PolandSilesian University of Technology, Faculty of Transport and Aviation Engineering, Gliwice, PolandThis paper presents an algorithm for determining the precision parameter for aircraft position coordinates based on a combined GPS/EGNOS and GPS/SDCM solution. The proposed algorithm uses a weighted average model that com-bines a single GPS/EGNOS and GPS/SDCM position navigation solution to determine the resulting aircraft coordi-nates. The weighted mean model include the linear coefficients as a function of: the inverse of the number of tracked GPS satellites for which EGNOS and SDCM corrections have been generated, and the inverse of the geometric coeffi-cient of the PDOP (Position Dilution of Precision). The corrections between the single GPS/EGNOS and GPS/SDCM solution to the aircraft's resultant coordinates are then calculated on this basis. Finally, the standard deviation for the aircraft resultant BLh (B-Latitude, L-Longitude, h- ellipsoidal height) coordinates is calculated as a measure of preci-sion. The research experiment used recorded on-board GPS+SBAS data from two GNSS receivers mounted on a Dia-mond DA 20-C1 aircraft. The test flight was carried out on the Olsztyn-Suwaki-Olsztyn route. The calculations of aircraft position based on GPS/EGNOS and GPS/SDCM solution were performed in the RTKLIB v.2.4.3 program in the RTKPOST module. Next, aircraft resultant coordinates and standard deviations were computed in Scilab v.6.0.0 soft-ware package. Based on the tests performed, it was found that for the Trimble Alloy receiver, the standard deviation values for the ellipsoidal coordinates BLh of the aircraft do not exceed 1.77 m. However, for the Septentrio AsterRx2i receiver, the values of standard deviations for the aircraft's ellipsoidal BLh coordinates do not exceed 5.04 m. The use of linear coefficients as the inverse of the number of tracked GPS satellites with SBAS corrections in the GPS/EGNOS+GPS/SDCM positioning model resulted in a reduction in standard deviations of approximately 50-51% relative to the solution with linear coefficients calculated as the inverse of the PDOP parameter. In paper, the standard deviation was also obtained using arithmetic mean model. However the values of standard deviation from weighted mean model are lower than arithmetic mean model.http://aot.publisherspanel.com/gicid/01.3001.0053.7264EGNOSSDCMprecisionstandard deviationaircraft coordinates |
| spellingShingle | Kamil Krasuski Marta Lalak Paweł Gołda Adam Ciećko Grzegorz Grunwald Magda Mrozik Jarosław Kozuba Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution Archives of Transport EGNOS SDCM precision standard deviation aircraft coordinates |
| title | Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution |
| title_full | Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution |
| title_fullStr | Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution |
| title_full_unstemmed | Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution |
| title_short | Analysis of the precision of determination of aircraft coordinates using EGNOS+SDCM solution |
| title_sort | analysis of the precision of determination of aircraft coordinates using egnos sdcm solution |
| topic | EGNOS SDCM precision standard deviation aircraft coordinates |
| url | http://aot.publisherspanel.com/gicid/01.3001.0053.7264 |
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