Andrii Mikhailovich Grekhov earned a BSc, MSc (1968–1973) in Theoretical Physics at Physics Faculty and Commander of Radar Set at Military Department of Kyiv State T. Shevchenko University, and PhD (1974–1980) in Institute of Semiconductors at Ukrainian Academy of Sciences, Doctor of Physical and Mathematical Sciences (1990) in Moscow Institute of Steel and Alloys. He has worked as a junior researcher (1974-1980) in Institute of Semiconductors at Ukrainian Academy of Sciences, senior research in Institute of Physics at Ukrainian Academy of Sciences and Head of the Department of Mathematics and Physics in Kyiv Antiaircraft Missile Higher Military Educational Institution (1981–1991), Head of the Physics Department at National University of Food Technologies (1991–1996), diplomat and Acting Representative of Ukraine to ICAO (1997-2000), Vice-Rector for R&D in Kyiv European University (2001-2006), Director of ICAO Institute in National Aviation University, Professor at Air Navigation Systems Department (2006 - to present). He is a EUROCONTROL expert in ADS-B systems. His research interests include surveillance, ADS-B systems, telecommunications, computer modeling. He is the author of about 190 scientific papers, textbooks, training aids, and proceedings.