Up-to-date SBAS DFMC Service Volume Prototype (DSVP) to support DFMC performance characterization activities

GNSS is one of the navigation means approved by the International Civil Aviation Organization (ICAO) for use in civil aviation navigation. The modernization of current GNSS constellations, like GPS, and the deployment of new ones, like Galileo or BDS, broadcasting dual-frequency signals in the Aeronautical Radio Navigation Service (ARNS) bands will lead in the near future to a Dual-Frequency Multi-Constellation (DFMC) GNSS environment for civil aviation. This new GNSS environment with additional and enhanced signals will support navigation services with improved positioning performances and robustness.GNSS augmentation systems like ABAS, SBAS and GBAS also need to evolve to support the new DFMC environment. Standardization of these new DFMC GNSS elements is a key step before their approval for operational use in civil aviation. The SBAS DFMC Service Volume Prototype (DSVP) is a software tool developed specifically to support the upcoming standardization activities of SBAS DFMC use for civil aviation. This paper presents the up-to-date SBAS DSVP tool along with its evolutions to comply with the latest SBAS DFMC standard. The paper also provides some examples of achievable SBAS DFMC system and user performances to test various system configurations and/or different interpretations or utilizations of the SBAS DFMC standard.