S.Yu. Zhuleva1, A.V. Kroshilin2, S.V. Kroshilina3

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

1 zhuleva.svetlana@bk.ru, 2 av_kroshilin@mail.ru, 3 asak_kasa@mail.ru