Ground-Based Augmentation System (GBAS)

The Ground-Based Augmentation System (GBAS) enhances the accuracy and reliability of GPS signals used for aircraft navigation during approaches and landings. Installed on the ground near airports, GBAS stations receive satellite signals and correct any errors caused by factors like atmospheric conditions or signal delays. These corrected signals are then transmitted to aircraft, providing precise guidance for safe and efficient landings, especially in challenging weather or low visibility. Essentially, GBAS acts as an additional, ground-based "error correction" layer to improve the safety and precision of satellite-based navigation for aircraft.