Prof. Erik Theunissen has been active in the field of Avionics for over 25 years. The company ISD, which he founded in 1988, has designed software for synthetic vision systems used in various U.S. research projects. Between 2000 and 2005 he was actively involved in the flight testing of his synthetic vision systems on a range of test aircraft, including the Boeing 707 Speckled Trout from the U.S. Air Force, a Boeing 727 from the Federal Aviation Administration, the Boeing 737-900 Technology Demonstrator, the NASA Boeing 757 Airborne Research Integrated Experiments System (ARIES) and a NASA Gulfstream V. He is also a professor in Avionics at the Netherlands Defense Academy and a two-time winner of the David Lubkowski Memorial Award for Advancement in Digital Avionics. More recently he has been involved in various projects focusing on the design and evaluation of detect and avoid systems for unmanned aircraft, including flight testing of ACAS-Xu and a prototype self-separation system at NASA Armstrong, and the June 2015 the flight testing of GA-ASI CPDS during Flight Test 3 of the NASA UAS in the NAS program. Prof. Theunissen holds an M.Sc. degree in Aerospace Engineering, an M.Sc. in Electrical Engineering and a PhD from Delft University, all three cum-laude.