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GNSS Frequently Asked Questions

The following are questions that the FAA GNSS Group has been asked concerning satellite navigation, GPS and its augmentations (WAAS and GBAS), transitioning to satellite navigation, as well as international initiatives. The questions have been divided into categories for your convenience. Please click on the areas of interest:

  1. Global Positioning System (GPS)
  2. Wide Area Augmentation System (WAAS)
  3. Ground Based Augmentation System (GBAS)
  4. National Airspace System (NAS) Implementation

For further inquiries, mail to MaryAnn Davis

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