Books
Understanding GPS : Principles and Applications
Elliott D. Kaplan (Editor)
Artech House Publishers, 1996
Global Positioning System : Theory and Practice
B. Hofmann-Wellenhof, H. Lichtenegger, J. Collins
Springer-Verlag Wien, 1997
Smithsonian Mathematical Formulae and Tables of Elliptic Functions
Adams, Edwin P., and Hippisley, Col. R. L.
Smithsonian Institution, 1947
Websites
Global
Positioning System Overview
All About GPS
Trimble
4000 Site Surveyor Ssi GPS Receiver
Trimble
L1/L2 Choke Ring Antenna
SuRGE - Student Reflected
GPS Experiment
Software