Q: How can GNSS augmentation services be combined to simultaneously support multiple user classes with demanding but varied requirements?
SAM PULLEN STANFORD UNIVERSITY, FRANCESCO RISPOLI,
ALESSIA VENNARINI, ARIANNA PERSIA, RADIOLABS , ALESSANDRO NERI, ROMA TRE UNIVERSITY AND RADIOLABS, ROBERTO CAPUA SOGEI
A: Many augmentations of GNSS satellite navigation have been developed and fielded since the GPS constellation was completed and declared fully operational in 1995. The best known of these are satellite-based and ground-based augmentation systems (SBAS and GBAS), which are public systems designed to support civil aviation.

