A.S. Togulov1, S.G. Gurzhin2, A.V. Shulyakov3

1–3 FSBEI HE «Ryazan State Radio Engineering University named after V.F. Utkin» (Ryazan, Russia)

1 togulov.a.s@rsreu.ru, 2 gurzhin@mail.ru, 3 shul_andr@mail.ru