P.A. Tushnov - Head of Department, Main Technologist, PJSC «Radiofizika». E-mail: tushnovp@mail.ru V.S. Berdyev - Ph. D. (Eng.), Head of Department, PJSC «Radiofizika». E-mail: v_ber@mail.ru

P.A. Tushnov - Main Technologist, Head of Department, PJSC «Radiofizika» (Moscow) V.S. Berdyev - Ph. D. (Eng.), Head of Department, PJSC «Radiofizika» (Moscow)