A.L. Gelgor - Ph. D. (Eng.), Associate Professor, Department «Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: a_gelgor@mail.ru A.I. Gorlov - Assistant, Department «Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: anton.gorlov@yandex.ru Nguyen Van Phe - Post-graduate Student, Department « Radio Engineering and Telecommunication Systems», Peter The Great St.Petersburg Polytechnic University E-mail: nvphe1905@gmail.com

Nguyen Van Phe – Post-graduate Student, Higher School of Applied Physics and Space Technologies  of Peter The Great St. Petersburg Polytechnic University

E-mail: nvphe1905@gmail.com

A.L. Gelgor – Ph.D.(Eng.), Associate Professor, Higher School of Applied Physics and Space Technologies  of Peter The Great St. Petersburg Polytechnic University

E-mail: а_пelgor@mail.ru

Nguyen Tan Hoang Phuoc – Post-graduate Student, Higher School of Applied Physics and Space Technologies  of Peter The Great St. Petersburg Polytechnic University E-mail: hoangphuoc1704@yahoo.com