Wide Area Augmentation System
Abbreviated as WAAS, Wide Area Augmentation System
is a system of satellites and ground stations that provide GPS
signal corrections for errors caused by ionosphere disturbances, timing, and satellite orbit errors. The Federal Aviation Administration (FAA) and the Department of Transportation (DOT) are developing the WAAS program for use in precision flight approaches. The WAAS specification requires a position accuracy of at least 7.6 meters for both lateral and vertical measurements, 95 percent of the time.
TECH RESOURCES FROM OUR PARTNERS