A.A. Rogachev - Ph. D. (Eng.), Senior Research Scientist, Belarusian State University of Transport (Homel). Е-mail: rogachevfv@mail.ru A.P. Luchnikov - Head of Laboratory, Moscow State Institute of Radio-Engeneering, Electronics and Automation (Technical University). Е-mail: xamdex@gmail.com A.M. Frolov - Student, Belarusian State University of Transport (Homel). Е-mail: rogachev78@mail.ru