S.P. Levashkin, V.V. Alexandrov
G.I. Khudiakov - technical science doctor, professor of the medical radioelectronics department of Saint-Petersburg state university of aerospace instrumentation. E-mail: khudgi@mail.ru
S.Ya. Grodzenskiy - Dr.Sc. (Eng.), Professor, Moscow Technological University (MIREA)
E.A. Kalacheva - Post-graduate Student, Moscow Technological University (MIREA)