G.P. Zhabko - Senior Lecturer, Department «Radiophysics», Peter The Great St.Petersburg Polytechnic University E-mail: g_zhabko@mail.ru E.L. Svechnikov - Ph. D. (Eng.), Associate Professor, Department «Radiophysics», Peter The Great St.Petersburg Polytechnic University E-mail: elsvech@mail.ru A.A. Belov - Engineer, Department «Radiophysics», Peter The Great St.Petersburg Polytechnic University E-mail: radar@radio.rphf.spbstu.ru