Abstract / truncated to 115 words (read the full abstract)

The Ground Based Augmentation System (GBAS) is a local-area, airport-based augmentation of Global Navigation Satellite Systems (GNSS) that provides precision approach guidance for aircraft. It enhances GNSS performance in terms of integrity, continuity, accuracy, and availability by providing differential corrections and integrity information to aircraft users. Differential corrections enable the aircraft to correct spatially correlated errors, improving its position estimation. Integrity parameters enable it to bound the residual position errors, ensuring safety of the operation. Additionally, a GBAS ground station continuously monitors and excludes the satellites affected by any system failure to guarantee system integrity and safety. Among the error sources of GNSS positioning, the ionosphere is the largest and most unpredictable. Under abnormal ionospheric ... toggle 7 keywords

GBAS ionosphere ionospheric monitoring network-based monitoring integrity availability ionospheric threat model


Caamaño Albuerne, María
Universitat Politècnica de Catalunya
Publication Year
Upload Date
Nov. 30, 2022

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