Dr. Stewart is currently Visiting Professor, Department of Electronic and Electrical Engineering, University College London, and is consultant on international S&T engagement with clients including DARPA. During 2007-2013 he served as Technical Director of Office of Naval Research Global. In this capacity he was responsible for providing technical direction to a staff of engineers/scientists involved in monitoring, assessing, and sponsoring world-wide S&T. He approved $60M of international S&T grants, sponsored 500 international conferences workshops, and visited research institutes in 30 different countries.
From 1994 to 2007, Dr. Stewart worked for SAIC as Corporate Vice President/Manager of the Reconnaissance/Surveillance Operation. In that position, he managed a $120M/yr R&D organization of 500 technical/administrative staff involved in development of hardware and software systems. Business areas include R&D of UAV systems/technology, advanced communications systems, manned flight simulator systems, data warehousing, and sensor product processing and exploitation, including international R&D in UK and Taiwan.
From 1990 to 1994 Dr. Stewart served as an Associate Professor of ECE and Associate Director (to Dr. Harry Van Trees), Center of Excellence in Command, Control, Communications, and Intelligence at George Mason University, Fairfax, VA. He taught graduate courses in EE and was PI on $3 million worth of grants/contracts, from DARPA, AF Rome Lab, and Army IEWD.
Dr. Stewart held positions in industry from 1984 to 1990. He worked for Sperry Corporation as the PI for Signal Processing for Corporate Technology Center, Reston, VA, where he conceived and developed a corporate-wide research program in signal and information processing ($2 million/year). He worked for ARCO Power Technologies, Inc., Washington, DC, as a Manager, Advanced Systems. As Program Manager of the Artificial Ionospheric Mirror Radar project under joint Air Force/DARPA sponsorship, Dr. Stewart performed research and directed efforts of 20 senior scientists/engineers involved in interdisciplinary research on high-power radar systems.
Dr. Stewart spent twenty years in the US Air Force leaving as a Lt Colonel in 1984. During his final tour (1982-84), he worked with Air Force Studies & Analyses in the Pentagon as Deputy Chief, Tactical Systems Division. He performed analyses and directed the efforts of 17 analysts/engineers in studies involving major reconnaissance, EW, and C3I systems. He served at the Air Force Academy as Associate Professor of EE (1978-82). He developed and taught undergraduate EE courses and also served as Director of Faculty Research and Continuing Education. In his earlier Air Force career, he was an Electronic Warfare Officer/Engineer and flew the EB-57, EB-66, and MC-130E aircraft, and was awarded the Distinguished Flying Cross.
He is a Senior Member of IEEE and has been a section chairman and member of various conference committees including international ones, most recently sponsor for 9th IEEE-RIVF International Conference, Ho Chi Minh City University of Technology, Vietnam in 2012. He has 15 refereed and 29 unrefereed publications.
Dr. Stewart graduated in 1973 from the University of Redlands with a BS in Engineering Science. He then received his MSEE in 1975 and his PhDEE from the Air Force Institute of Technology.