TY  - BOOK
AU  - Parkinson,Bradford W.
AU  - Spilker,James J.
TI  - Global positioning system: theory and applications 
SN  - 156347106X
PY  - 1996///
CY  - Reston, Va.
PB  - American Institute of Aeronautics and Astronautics
KW  - Global positioning system
ER  -