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GNSS Library - Documents

This section contains various reference documentation related to the projects of the FAA's Global Navigation Satellite Systems (GNSS) Group.

General SatNav

WAAS and NOTAMS Overview (MS Word)

Phase II of the GNSS Evolutionary Architecture Study, February 2010 (PDF)

Global Positioning System Standard Positioning Service (SPS) Performance Standard, October 2001 (PDF)

2014 Federal Radionavigation Plan (PDF)



Air Traffic Bulletin - What Controllers Need To Know About WAAS, June 2008

Information contained in this bulletin changed just prior to publication. The July 2008 reference in this bulletin noting the month when LPV approach procedures will exceed the number of Federal Aviation Administration ILS instrument procedures has changed to September 2008. Thank you for noting this correction.

Maximizing Airport Operations Using the Wide Area Augmentation System (PDF)



The Ground Based Augmentation System (GBAS) program is managed by the FAA Aviation NextGen and Operations Planning Service Unit (ANG-C32) at the FAA William J. Hughes Technical Center. More information can be found at


Acronym List

Acronym List (MS Excel)


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