Preprint (Draft being sent to journal)
Davis, George (Orbital Sciences Corp. Greenbelt, MD United States) Davis, Edward (NASA Goddard Space Flight Center Greenbelt, MD United States) Luthcke, Scott (Raytheon Information Technology and Scientific Services Greenbelt, MD United States) Hawkins, Kimberly (Hammers Co. Greenbelt, MD United States)
September 7, 2013
January 1, 2000
Global Positioning Systems(Salt Lake City, NV)
Work of the US Gov. Public Use Permitted.