VHF omnidirectional range
Because of the above, St Helena Airport was equipped with an instrument landing system (ILS) and a Doppler VHF omnidirectional range system (DVOR) supplied by Thales Group. Further to that Honeywell Aerospace supplied a "SmartPath" ground-based augmentation system (GBAS), a technology that augments global positioning system (GPS) signals to make them suitable for precision approach and landing. It overcomes many of the limitations of instrument landing systems (ILS) traditionally used by airports to guide aircraft as they approach the runway.