I.M. Golev - Dr.Sc. (Phys.-Math.), Professor, Federal State Official Military Educational Institution of Higher Professional Education Military Educational-Research Centre of Air Force «Air Force Academy named after professor N.E.Zhukovsky and Y.A.Gagarin» (Voronezh) of the Ministry of Defence of the Russian. E-mail: imgolev@gmail.com V.N. Sanin - Dr.Sc. (Phys.-Math.), Professor, Federal State Official Military Educational Institution of Higher Professional Education Military Educational-Research Centre of Air Force «Air Force Academy named after professor N.E.Zhukovsky and Y.A. Gagarin», Voronezh of the Ministry of Defence of the Russian. E-mail: vsanin@ro.ru T.V. Prokopova - Ph.D. (Phys.-Math.), Associate Professor, Federal State Official Military Educational Institution of Higher Professional Education Military Educational-Research Centre of Air Force «Air Force Academy named after professor N.E. Zhukovsky and Y.A. Gagarin», Voronezh of the Ministry of Defence of the Russian. E-mail: kop1965@mail.ru Y.A. Boldyreva - Ph.D. (Phys.-Math.), Federal State Official Military Educational Institution of Higher Professional Education Military Educational-Research Centre of Air Force «Air Force Academy named after professor N.E.Zhukovsky and Y.A. Gagarin», Voronezh of the Ministry of Defence of the Russian. E-mail: yana_alex9@mail.ru

V. N. Vyuginov1, A. D. Grigoriev2

1,2 Saint-Petersburg Electrotechnical University (St.-Petersburg, Russia)