V.V. Zolotarev - Dr. Sc. (Eng.), Professor, Senior Research Scientist, Space Research Institute of RAS (Moscow). E-mail: zolotasd@yandex.ru G.V. Ovechkin - Dr. Sc. (Eng.), Associate Professor, Professor, Ryazan State Radio Engineering University. E-mail: g_ovechkin@mail.ru

V.V. Zolotarev - Dr. Sc. (Eng.), Professor, Senior Research Scientist, Space Research Institute of RAS (Moscow) E-mail: zolotasd@yandex.ru G.V. Ovechkin - Dr. Sc. (Eng.), Associate Professor, Professor, Ryazan State Radio Engineering University E-mail: g_ovechkin@mail.ru P.V. Ovechkin - Ph. D. (Eng.), Associate Professor, Ryazan State Radio Engineering University E-mail: pavel_ov@mail.ru