What does the Ground-Based Augmentation System (GBAS) do?

The Ground-Based Augmentation System (GBAS) is designed to improve the accuracy, integrity, and availability of GPS signals specifically for aviation purposes, particularly during landing approaches. This system provides differential corrections to the GPS signals from ground stations, which significantly enhances the precision of the GPS positioning information that aircraft rely on. As a result, GBAS allows for more accurate approaches to airports, especially in reduced visibility conditions, making it a critical tool for maintaining safety and efficiency in aviation navigation.

The focus of GBAS on improving GPS accuracy directly aligns with the operational needs of aircraft, where precise positioning is crucial during critical phases of flight such as landing. This capability supports advanced operational procedures and helps facilitate approaches to runways with greater accuracy than standalone GPS can provide.