Naslov
An open-access massive data set for research on geomagnetic field effects on GPS/GNSS ionospheric delay

Autori
Filjar, Renato ; Heđi, Ivan ; Sikirica, Nenad

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
United Nations Workshop on the International Space Weather Initiative (ISWI): The Way Forward Book of Abstract / Gadimova, Sharafat ; Gindler, Patrick - Beč : UN Office for Outer Space Affairs, 2023, 12-13

Skup
United Nations Workshop on the International Space Weather Initiative: The Way Forward

Mjesto i datum
Beč, Austrija, 26.06.2023. - 30.06.2023

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
GPS ; GNSS ; ionospheric delay ; space weather ; data set

Sažetak
GPS/GNSS is a fundamental technology and a cornerstone of a modern civilisation [3]. Mitigation of space weather, geomagnetic and ionospheric effects on GPS/GNSS Positioning, Navigation, and Timing (PNT) service provision is essential, since those render profound effects causing the GPS/GNSS PNT quality degradation [1, 2]. Researchers in the field often lack experimental data to work with while developing and testing GPS/GNSS ionospheric delay correction models as alternatives to those offered as standard (Klobuchar, NeQuick) [1, 8]. Recent developments argue in favour of utilisation of correction models that utilise awareness of space weather conditions in immediate vicinity of a GPS/GNSS receiver [1, 2, 8]. Here we report the arrangement of an open-access massive data set collected in sub-equatorial region, in support of research in the positioning environment-aware self-adaptive GPS/GNSS ionospheric delay correction model development [4, 5]. We assembled a massive data set comprising: (i) Total Electron Content (TEC) observations, derived from dual-frequency GPS pseudorange observations taken at International GNSS Network (IGS) reference station Darwin, NT, and (ii) components of geomagnetic field density (Bx, By, Bz), collected at the INTERMAGNET reference station Kakadu, NT. Data are assembled using a tailored software developed in the R environment for statistical computing. It extends the time span of a whole year 2014, thus covering the full range and occurrence rate of various geomagnetic events impacting GPS/GNSS PNT. Structured as a single CSV file of 28.5 MB, the data set comprises 522 298 individual instances (observations taken at the same time). The assembled data set is provided in the open access manner at the internet-based research repository figshare [5], as a service to international research community. (References stated here are presented in the original material)

Izvorni jezik
Engleski

Znanstvena područja
Matematika, Geofizika, Elektrotehnika, Računarstvo, Zrakoplovstvo, raketna i svemirska tehnika

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