UNDER CONSTRUCTION
UCLA GPS Group
MIT Lincoln Labs GLONASS Group (and GPS Position Estimates)
MIT Lincoln Labs GLONASS Group GPS Position Error Plot
An Overview of the Global Positioning System (GPS)
by Peter H. Dana, Department of Geography, University of Texas at Austin
Global Positioning System (GPS) Resources
by Sam Wormley, Center for NDE, Iowa State University
Introduction to Global Positioning System Applications by John Beadles,
Guest Editor, TradeWave-Galaxy
Satellite Navigation Newsgroup (GPS)
Navtech GPS Store (Navtech Seminars)
Differential Corrections, Inc.
Ashtech - Presicion Solutions for Global Positioning