V.N. Kharisov –Dr. Sc. (Eng.), Professor, Navigation and connection systems director, OJSC «VNIIR-Progress» (Moscow) E-mail: vkharisov@abselectro.com

A.V. Peltin – Ph. D. (Eng.), Senior Research Scientist, OJSC «VNIIR-Progress» (Moscow) E-mail: apeltin@abselectro.com