Ground based augmentation system (GBAS)

{
  "id": "MLC-T-AVN-000453",
  "term": "Ground based augmentation system (GBAS)",
  "field": "Aviation and air traffic control",
  "definition": "A ground based GNSS station which provides local differential corrections, integrity parameters and approach data via VHF data broadcast to GNSS users to meet real-time performance requirements for CAT I precision approaches. The aircraft applies the broadcast data to improve the accuracy and integrity of its GNSS signals and computes the deviations to the selected approach. A single ground station can serve multiple runway ends up to an approximate radius of 23 NM.",
  "abbreviation": "GBAS",
  "references": [
    "FAA Pilot/Controller Glossary"
  ],
  "url": "https://mlchart.com/terminology/aviation/ground-based-augmentation-system-gbas/"
}