Assessing the High-Accuracy Service at High Latitudes

• Published in: ENC 2023
• Main Authors: Melania Susi, Daniele Borio, Althaf Azeez, Jihye Park, Kinga Wezka, Ignacio Fernandez-Hernandez
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2023
• Subjects: Galileo High-Accuracy Service; HAS; Precise Point Positioning; PPP; high latitudes; ionospheric scintillation; Engineering machinery; tools; and implements; TA213-215; Hornsund; Svalbard
• Online Access: https://doi.org/10.3390/ENC2023-15421; https://doaj.org/article/2a8f2660a08c4383a1f1028c7b59d669

The Galileo High-Accuracy Service (HAS) was declared operational (initial service) in January 2023 after an intense testing phase aimed at assessing its service performance through the transmission of live HAS corrections. The HAS performance at high latitudes is evaluated by analyzing data collected at the Polish Polar Station located in Hornsund, in the Norwegian Svalbard archipelago. At such a location, the reception conditions can be affected by poor satellite geometries and ionospheric scintillation may degrade the signal quality. In this respect, data affected by scintillation events were identified and used for the performance analysis. The assessment is carried out by comparing the HAS corrections with the International GNSS Service (IGS) precise products. Moreover, the retrieved HAS corrections are used to assess the Precise Point Positioning (PPP) performance.