KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION
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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Federal do Paraná
2019
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| _version_ | 1876459436488261632 |
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| author | Paulo de Tarso Setti |
| author_facet | Paulo de Tarso Setti |
| contents | KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION Paulo de Tarso Setti Daniele Barroca Marra Alves Crislaine Menezes da Silva Ciencias de la Tierra NeQuick Galileo Klobuchar Point Positioning One of the main error sources in GNSS positioning comes from the ionosphere, an atmospheric layer that stays in the signal path between the satellite and the receiver. For single frequency positioning, the ionospheric effects can be minimized by using an ionospheric model e.g. Klobuchar or NeQuick G. These models are respectively associated to GPS and Galileo systems through their navigation messages, which broadcast coefficients that describe the worldwide ionospheric behavior, and the calculated ionospheric delay is then applied in the pseudorange observations. In this paper, it is presented a comparison between these two models in multi-GNSS (GPS and Galileo) single frequency point positioning, considering two Brazilian stations at different magnetic latitudes, and covered months of weak and strong ionospheric activity from 2013 to 2018. The results indicate a better performance of NeQuick G model compared to the Klobuchar. Considering all the analyzed periods and stations, Klobuchar improves the positioning accuracy in 16% and 50% in periods of weak and strong ionospheric activity, respectively, while NeQuick G improves the accuracy in 31% and 55%. 2019 artículo científico 1413-4853 https://www.redalyc.org/articulo.oa?id=393962622004 https://www.redalyc.org/journal/3939/393962622004/ https://www.redalyc.org/journal/3939/393962622004/html/ https://www.redalyc.org/journal/3939/393962622004/393962622004.epub https://www.redalyc.org/journal/3939/393962622004/movil 10.1590/s1982-21702019000300016 en http://www.redalyc.org/revista.oa?id=3939 Boletim de Ciências Geodésicas application/pdf Universidade Federal do Paraná Boletim de Ciências Geodésicas (Brasil) Num.3 Vol.25 |
| format | Artículo científico |
| id | redalyc_393962622004 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Universidade Federal do Paraná |
| spellingShingle | KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION Paulo de Tarso Setti Ciencias de la Tierra NeQuick Galileo Klobuchar Point Positioning KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION Paulo de Tarso Setti Daniele Barroca Marra Alves Crislaine Menezes da Silva Ciencias de la Tierra NeQuick Galileo Klobuchar Point Positioning One of the main error sources in GNSS positioning comes from the ionosphere, an atmospheric layer that stays in the signal path between the satellite and the receiver. For single frequency positioning, the ionospheric effects can be minimized by using an ionospheric model e.g. Klobuchar or NeQuick G. These models are respectively associated to GPS and Galileo systems through their navigation messages, which broadcast coefficients that describe the worldwide ionospheric behavior, and the calculated ionospheric delay is then applied in the pseudorange observations. In this paper, it is presented a comparison between these two models in multi-GNSS (GPS and Galileo) single frequency point positioning, considering two Brazilian stations at different magnetic latitudes, and covered months of weak and strong ionospheric activity from 2013 to 2018. The results indicate a better performance of NeQuick G model compared to the Klobuchar. Considering all the analyzed periods and stations, Klobuchar improves the positioning accuracy in 16% and 50% in periods of weak and strong ionospheric activity, respectively, while NeQuick G improves the accuracy in 31% and 55%. 2019 artículo científico 1413-4853 https://www.redalyc.org/articulo.oa?id=393962622004 https://www.redalyc.org/journal/3939/393962622004/ https://www.redalyc.org/journal/3939/393962622004/html/ https://www.redalyc.org/journal/3939/393962622004/393962622004.epub https://www.redalyc.org/journal/3939/393962622004/movil 10.1590/s1982-21702019000300016 en http://www.redalyc.org/revista.oa?id=3939 Boletim de Ciências Geodésicas application/pdf Universidade Federal do Paraná Boletim de Ciências Geodésicas (Brasil) Num.3 Vol.25 |
| title | KLOBUCHAR AND NEQUICK G IONOSPHERIC MODELS COMPARISON FOR MULTI-GNSS SINGLE-FREQUENCY CODE POINT POSITIONING IN THE BRAZILIAN REGION |
| topic | Ciencias de la Tierra NeQuick Galileo Klobuchar Point Positioning |
| url | https://www.redalyc.org/articulo.oa?id=393962622004 https://www.redalyc.org/journal/3939/393962622004/ https://www.redalyc.org/journal/3939/393962622004/html/ https://www.redalyc.org/journal/3939/393962622004/393962622004.epub https://www.redalyc.org/journal/3939/393962622004/movil |