Vector Sensor Reference Manual 136
Figure C-2 EGNOS Coverage
SBAS Ionospheric Map Extrapolation
To improve upon the ionospheric map provided by SBAS, the Vector Sensor extrapolates a larger
ionospheric map from the broadcast coverage map, extending its effective coverage. This allows
the Vector Sensor to be used successfully in regions that competitive products may not.
For WAAS, this is especially important in Canada for regions north of approximately 54° N
latitude and east of 110° W longitude. Extrapolation also provides enhanced coverage throughout
much of the Gulf of Mexico.