In the next two years the Australian Government will invest $12 million in testing a satellite-based augmentation systems (SBAS).
Usually GNSS systems offer an accuracy from 5 to 10 meters, with SBAS infrastructure a 2D-Position accuracy of less than 5 centimeters can be achieved.
SBAS systems follow a similar layout of GNSS systems, consisting of:
The following errors are calculated and compensated
The correction signal is transmitted from a geostationary satellite using the same frequency as GPS (L-band). This allows the user segment to use the same receiver and Antenna for SBAS.