Which of the following is an example of GBAS?

Which of the following is an example of GBAS?

• A. WAAS
• B. RAIM
• C. INS
• D. LAAS

Answer: (D)

GBAS is a ground-based augmentation approach that provides localized GNSS corrections and integrity information to aircraft in a small area around an airport, enabling precise approaches and landings. Local Area Augmentation System is the example that fits this role, since it uses ground reference stations at the airport to generate differential corrections and broadcasts them to nearby aircraft to improve accuracy and integrity for approaches. In contrast, WAAS is a Satellite-Based Augmentation System serving a wide region, RAIM is a receiver technique for detecting GNSS faults, and INS is an independent inertial navigation system. So, the example of GBAS is LAAS.

GBAS is a ground-based augmentation approach that provides localized GNSS corrections and integrity information to aircraft in a small area around an airport, enabling precise approaches and landings. Local Area Augmentation System is the example that fits this role, since it uses ground reference stations at the airport to generate differential corrections and broadcasts them to nearby aircraft to improve accuracy and integrity for approaches. In contrast, WAAS is a Satellite-Based Augmentation System serving a wide region, RAIM is a receiver technique for detecting GNSS faults, and INS is an independent inertial navigation system. So, the example of GBAS is LAAS.