GPS procedures Flashcards
What is another name for GPS?
GNSS, which stands for global navigation satellite system
How many satellites make up GNSS
32 satellites
What is the accuracy of GNSS?
26 feet
Minimum number of satellites needed to do a GPS approach
Four
What are the two types of GPS approaches
LNAV or L/VNAV
What does LAAS stand for?
Local area augmentation system
What is another name for LAAS?
GBAS or ground-based augmentation system
What is the accuracy of LAAS/GBAS
3 feet
What does category three on approaches mean?
Full auto land, down to 00 minimums
Currently, who is the only organization allowed to use LAAS/GBAS approaches
United Airlines, who owns the approaches
What does WAAS stand for?
Wide area augmentation system
What is the ICAO name for WAAS
SBAS or space-based augmentation system
How does WAAS work?
Towers are located around the country and the satellites cross reference with the tower to improve the satellite position Guidance
