JMU
The Global Positioning System (GPS)
An Introduction


Prof. David Bernstein
James Madison University

Computer Science Department
bernstdh@jmu.edu


The Satellites
The Signal
Signal Errors
Coordinate System
images/gps-range.gif
Triangulation
Triangulation (cont.)

The Spheres Around Three Satellites

images/gps-triangulation.gif
Triangulation (cont.)
Triangulation (cont.)
Longitude, Latitude and Altitude