Rosen Miletiev graduated with an MSc in electrical engineering (2001) and PhD degree in “Automated Control Systems in Communications” (2005) from the Technical University of Sofia. Now, he is an associate professor in the Radio Communications Department, Faculty of Telecommunications, Technical University of Sofia (Bulgaria). His work in navigation systems has resulted in more than 75 publications, lectures in the field of measurements in communications, digital communications, a book in radio navigation and radar systems, four patents and some national awards. His major fields of scientific research are inertial systems, global navigation systems, remote control, development of information and communication systems, wireless communications, etc.