Satellite Based Augmentation Systems (SBAS) monitor and correct the signals emitted by Global Navigation Satellite Systems (GNSS), especially GPS signals
Although SBAS was initially conceived for civil aviation it is being used nowadays in sectors as diverse as agriculture, road-, rail- and sea-transport and also geomatics
The SBAS-Africa program, co-funded by the UK Space Agency (UKSA), has recently demonstrated the potential benefits of SBAS in southern and eastern Africa