Wide-area GNSS corrections for precise positioning and navigation in agriculture
| Autor: | Manuel Hernández-Pajares, Germán Olivares-Pulido, Victoria Graffigna, Alberto García-Rigo, Haixia Lyu, David Roma-Dollase, M. de Lacy, Carles Fernández-Prades, Javier Arribas, Marc Majoral, Zizis Tisropoulos, Panagiotis Stamatelopoulos, Machi Symeonidou, Michael Schmidt, Andreas Goss, Eren Erdogan, Frits van Evert, Pieter Blok, Juan Grosso, Emiliano Spaltro, Jacobo Domínguez, Esther López, Alina Hriscu |
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| Přispěvatelé: | European Commission |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
precise GNSS navigation
Real-time ionospheric electron content corrections Toegepaste Ecologie Farm Technology Precise agriculture Article real-time ionospheric electron content corrections precise agriculture PE&RC ddc Precise GNSS navigation General Earth and Planetary Sciences Agrarische Bedrijfstechnologie Agro Field Technology Innovations Applied Ecology |
| Zdroj: | Remote Sensing, 14(16) Remote Sensing; Volume 14; Issue 16; Pages: 3845 Remote Sensing 14 (2022) 16 |
| ISSN: | 2072-4292 |
| Popis: | This article belongs to the Special Issue GNSS Atmospheric Modelling. 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. This research was funded under the European Commission H2020 project Advanced Multi-Constellation EGNSS Augmentation and Monitoring Network and its Application in Precision Agriculture (AUDITOR-GA687367). This manuscript has been written thanks to the partial support of the ongoing EC funded PITHIA-NRF (H2020-INFRAIA-2018-2020 101007599) project. |
| Databáze: | OpenAIRE |
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