Demoz Gebre-Egziabher is a professor in the Department of Aerospace Engineering and Mechanics at the University of Minnesota, Twin Cities. At the University of Minnesota he teaches courses in aerospace systems and directs a research lab focusing on the design of multi-sensor navigation and attitude determination systems for aerospace vehicles. He was the past secretary of the Satellite Division of the Institute of Navigation (ION) and has also served as associate editor of navigation for the IEEE Transactions on Aerospace and Electronic Systems. He is the current director of the NASA/Minnesota Space Grant Consortium. He is an associate fellow of the American Institute of Aeronautics and Astronautics (AIAA). From 1990 to 1996 he was an officer in the United States Navy where he served as a system engineer on the staff of the Naval Sea Systems Command division of naval reactors in Washington D.C. Dr. Gebre-Egziabher holds a B.S in Aerospace Engineering from the University of Arizona, a M.S in Mechanical Engineering from the George Washington University and a Ph.D. in aeronautics and astronautics from Stanford University. He is a registered professional engineer (mechanical engineering) and licensed private pilot (with an instrument rating).