E.R. Muratov - Ph. D. (Eng.), Associate Professor, Ryazan State Radio Engineering University. E-mail: myratov_er@mail.ru M.B. Nikiforov - Ph. D. (Eng.), Associate Professor, Deputy Head of Department, Ryazan State Radio Engineering University. E-mail: nikiforov.m.b@evm.rsreu.ru D.I. Ustyukov - Engineer, Ryazan State Radio Engineering University. E-mail: ustukov.mail@yandex.ru