Yu.N. Parshin - Dr. Sc. (Eng.), Professor, Ryazan State Radio Engineering University. E-mail: parshin.y.n@rsreu.ru
V.I. Kudryashov - Post-graduate Student, Ryazan State Radio Engineering University. E-mail: yachmen@mail.ru
1 Military Order of Zhukov University of Radio Electronics (Cherepovets, Russia)
2 Academy of the Federal Security Service of the Russian Federation (Oryol, Russia)
