TABLE 1

GBAS ionospheric gradient parameters

ParameterConusGermanyBrazil
Max. front slope (g) [mm/km]425140860
Front width (w) [km]25–20020–20022–454
Front speed (v) [m/s]0–7500–120040–246
Front direction (d) [°]0–3600–360Within ±30° of magnetic equator (W-E)
Max. differential delay (D) [m]505035