I.V. Donets - Ph. D. (Phys.-Math.), Associate Professor, Head of Sector, JSC «KB «SVIAZ» (Rostov-on-Don); Asso-ciate Professor, Faculty of Physics, Southern Federal University (Rostov-on-Don). E-mail: ivdonets@rambler.ru J.A. Reyzenkind - Ph. D. (Phys.-Math.), Senior Research Scientist, JSC «KB «SVIAZ» (Rostov-on-Don); Senior Re-search Scientist, Research Institute of Physics SFU (Rostov-on-Don). E-mail: jar@ip.rsu.ru V.N. Shevchenko - Dr. Sc. (Eng.), Professor, Head of Research and Technical Development Center, JSC «KB «SVIAZ» (Rostov-on-Don). E-mail: rostov@gkbsvyaz.ru