A.V. Bogoslovsky - Dr. Sc. (Eng.), Honored Scientist of RF, Professor, Department of Mathematics, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh) E-mail: p-digim@mail.ru M.A. Pantyukhin - Post-graduate Student, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh) E-mail: ol-max@mail.ru I.V. Zhigulina - Ph. D. (Eng.), Associate Professor, Professor, Department of Mathematics, MESC «Zhukovsky-Gagarin Air Force Academy» (Voronezh) E-mail: ira_zhigulina@mail.ru