Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services
CROPOS, as the Croatian GNSS network, was modernized and upgraded to support the Galileo system in 2019. Two of CROPOS’s services—VPPS (Network RTK service) and GPPS (post-processing service)—were assessed for the contribution of the Galileo system to their performance. A station used for field test...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/5/2466 |
| _version_ | 1827752130758311936 |
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| author | Danijel Šugar Ana Kliman Željko Bačić Zvonimir Nevistić |
| author_facet | Danijel Šugar Ana Kliman Željko Bačić Zvonimir Nevistić |
| author_sort | Danijel Šugar |
| collection | DOAJ |
| description | CROPOS, as the Croatian GNSS network, was modernized and upgraded to support the Galileo system in 2019. Two of CROPOS’s services—VPPS (Network RTK service) and GPPS (post-processing service)—were assessed for the contribution of the Galileo system to their performance. A station used for field testing was previously examined and surveyed to determine the local horizon and to carry out a detailed mission planning. The whole day of observation was divided into several sessions, each with a different visibility of Galileo satellites. A special observation sequence was designed: VPPS (GPS-GLO-GAL), VPPS (GAL-only), and GPPS (GPS-GLO-GAL-BDS). All observations were taken on the same station with the same GNSS receiver, Trimble R12. Each static observation session was post-processed in Trimble Business Center (TBC) in two different ways: considering all available systems (GGGB) and considering GAL-only observations. A daily static solution based on all systems (GGGB) was considered as the reference for the accuracy assessment of all obtained solutions. The results obtained with VPPS (GPS-GLO-GAL) and VPPS (GAL-only) were analyzed and assessed; the results obtained with GAL-only have shown a slightly higher scatter. It was concluded that the inclusion of the Galileo system in CROPOS has contributed to the availability and reliability of solutions but not to their accuracy. By complying with the observation rules and taking redundant measurements, the accuracy of GAL-only results can be improved. |
| first_indexed | 2024-03-11T07:11:27Z |
| format | Article |
| id | doaj.art-6da6cca96b4742a3ba0da2e6ae4d545b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T07:11:27Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6da6cca96b4742a3ba0da2e6ae4d545b2023-11-17T08:35:10ZengMDPI AGSensors1424-82202023-02-01235246610.3390/s23052466Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s ServicesDanijel Šugar0Ana Kliman1Željko Bačić2Zvonimir Nevistić3Faculty of Geodesy, University of Zagreb, Kačićeva 26, 10000 Zagreb, CroatiaGerman Aerospace Center (DLR), Institute of Communication and Navigation, Muenchener Str. 20, Oberpfaffenhofen, 82234 Wessling, GermanyFaculty of Geodesy, University of Zagreb, Kačićeva 26, 10000 Zagreb, CroatiaFaculty of Geodesy, University of Zagreb, Kačićeva 26, 10000 Zagreb, CroatiaCROPOS, as the Croatian GNSS network, was modernized and upgraded to support the Galileo system in 2019. Two of CROPOS’s services—VPPS (Network RTK service) and GPPS (post-processing service)—were assessed for the contribution of the Galileo system to their performance. A station used for field testing was previously examined and surveyed to determine the local horizon and to carry out a detailed mission planning. The whole day of observation was divided into several sessions, each with a different visibility of Galileo satellites. A special observation sequence was designed: VPPS (GPS-GLO-GAL), VPPS (GAL-only), and GPPS (GPS-GLO-GAL-BDS). All observations were taken on the same station with the same GNSS receiver, Trimble R12. Each static observation session was post-processed in Trimble Business Center (TBC) in two different ways: considering all available systems (GGGB) and considering GAL-only observations. A daily static solution based on all systems (GGGB) was considered as the reference for the accuracy assessment of all obtained solutions. The results obtained with VPPS (GPS-GLO-GAL) and VPPS (GAL-only) were analyzed and assessed; the results obtained with GAL-only have shown a slightly higher scatter. It was concluded that the inclusion of the Galileo system in CROPOS has contributed to the availability and reliability of solutions but not to their accuracy. By complying with the observation rules and taking redundant measurements, the accuracy of GAL-only results can be improved.https://www.mdpi.com/1424-8220/23/5/2466CROPOSGNSSGalileomodernizationVPPSGPPS |
| spellingShingle | Danijel Šugar Ana Kliman Željko Bačić Zvonimir Nevistić Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services Sensors CROPOS GNSS Galileo modernization VPPS GPPS |
| title | Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services |
| title_full | Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services |
| title_fullStr | Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services |
| title_full_unstemmed | Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services |
| title_short | Assessment of GNSS Galileo Contribution to the Modernization of CROPOS’s Services |
| title_sort | assessment of gnss galileo contribution to the modernization of cropos s services |
| topic | CROPOS GNSS Galileo modernization VPPS GPPS |
| url | https://www.mdpi.com/1424-8220/23/5/2466 |
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