Automotive User Positioning Using Galileo High Accuracy Service

Ileana Milani, Mattia Carosi, Jacopo Capolicchio, Calogero Cristodaro, Francesca Andreini, Edoardo Montecchiani, Lorenzo Marchionne, Marco Fortunato, and Stefano La Barbera

Peer Reviewed

Abstract:	This paper explores the usage of Galileo HAS in automotive scenarios, shedding light on its capabilities, advantages, and emerging trends in this domain. In particular, it aims at evaluating automotive user performance in a real scenario affected by nominal conditions. To reach this purpose, a dedicated data collection was carried out in Rome using the Thales Alenia Space Italia (TAS-I) VAN equipped with different classes of GNSS receivers belonging to assorted user applications, which have been selected to compare and assess their dynamic performance. The PPP solution was achieved by using Galileo HAS disseminated via SiS, as explained further on. Performance was evaluated taking advantage of GrafNav to determine the continuous true path positioning coordinates with centimeter level of accuracy. Due to the capability of HAS to serve both Galileo and GPS users, and to highlight the potentiality of using these corrections for a dynamic user in a realistic scenario, the results of the study focus on multi-constellation (Galileo + GPS) configuration. For this purpose, a post processing tool has been developed to decode the HAS corrections, reconstruct the HAS products (SP3, CLK and SINEX bias files) and process them together with the RINEX files (observation and navigation). These inputs have been injected to a free and open-source software (RTKLIB) for the estimation of multi-constellation and multi-frequency PPP solution. The HAS solution of each receiver was then compared with the results achieved in the same scenario with traditional GNSS algorithms which do not rely on HAS corrections, to assess the added value of the HAS service for automotive applications. In conclusion, this work represents one of the first activities where HAS corrections have been applied in real kinematic environment paving the way for their use in other emerging dynamic automotive applications like smart cities, fleet management, etc.
Published in:	Proceedings of the ION 2024 Pacific PNT Meeting April 15 - 18, 2024 Hilton Waikiki Beach Honolulu, Hawaii
Pages:	94 - 105
Cite this article:	Milani, Ileana, Carosi, Mattia, Capolicchio, Jacopo, Cristodaro, Calogero, Andreini, Francesca, Montecchiani, Edoardo, Marchionne, Lorenzo, Fortunato, Marco, La Barbera, Stefano, "Automotive User Positioning Using Galileo High Accuracy Service," Proceedings of the ION 2024 Pacific PNT Meeting, Honolulu, Hawaii, April 2024, pp. 94-105. https://doi.org/10.33012/2024.19625
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