1. Global Positioning System: Theory and Applications;Parkinson;American Institute of Aeronautics and Astronautics,1996
2. Global Positioning System: Theory and Applications;Parkinson;American Institute of Aeronautics and Astronautics,1996
3. Opshaug , G. R. P. Enge GPS and UWB for Indoor Navigation September 1114, 2001 1427 33