| Title: |
Wide-Area GNSS Corrections for Precise Positioning and Navigation in Agriculture |
| Authors: |
Hernández-Pajares, Manuel; Olivares-Pulido, Germán; Graffigna, Victoria; García-Rigo, Alberto; Lyu, Haixia; Roma-Dollase, David; de Lacy, M.C.; Fernández-Prades, Carles; Arribas, Javier; Majoral, Marc; Tisropoulos, Zizis; Stamatelopoulos, Panagiotis; Symeonidou, Machi; Schmidt, Michael; Goss, Andreas; Erdogan, Eren; van Evert, Frits K.; Blok, Pieter M.; Grosso, Juan; Spaltro, Emiliano; Domínguez, Jacobo; López, Esther; Hriscu, Alina |
| Source: |
Remote Sensing 14 (2022) 16 ; ISSN: 2072-4292 |
| Publication Year: |
2022 |
| Collection: |
Wageningen UR (University & Research Centre): Digital Library |
| Subject Terms: |
precise GNSS navigation; precise agriculture; real-time ionospheric electron content corrections |
| Description: |
This paper characterizes, with static and roving GNSS receivers in the context of precision agriculture research, the hybrid ionospheric-geodetic GNSS model Wide-Area Real-Time Kinematics (WARTK), which computes and broadcasts real-time corrections for high-precision GNSS positioning and navigation within sparse GNSS receiver networks. This research is motivated by the potential benefits of the low-cost precise WARTK technique on mass-market applications such as precision agriculture. The results from two experiments summarized in this work, the second one involving a working spraying tractor, show, firstly, that the corrections from the model are in good agreement with the corrections provided by IGS (International GNSS Services) analysis centers computed in post-processing from global GNSS data. Moreover, secondly and most importantly, we have shown that WARTK provides navigation solutions at decimeter-level accuracy, and the ionospheric corrections significantly reduce the computational time for ambiguity estimation: up to convergence times for the 50%, 75% and 95% of cases equal or below 30 s (single-epoch), 150 s and 600 s approximately, vs. 1000 s, 2750 s and 4850 s without ionospheric corrections, everything for a roving receiver at more than 100 km far away from the nearest permanent receiver. The real-time horizontal position errors reach up to 3 cm, 5 cm and 12 cm for 50%, 75% and 95% of cases, respectively, by constraining and continuously updating the ambiguities without updating the permanent receiver coordinates, vs. the 6 cm, 12 cm and 32 cm, respectively, in the same conditions but without WARTK ionospheric corrections. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://edepot.wur.nl/578180 |
| DOI: |
10.3390/rs14163845 |
| Availability: |
https://research.wur.nl/en/publications/wide-area-gnss-corrections-for-precise-positioning-and-navigation; https://doi.org/10.3390/rs14163845; https://edepot.wur.nl/578180 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; Wageningen University & Research |
| Accession Number: |
edsbas.599FF9D6 |
| Database: |
BASE |