L.Е. Nazarov - Dr.Sc. (Phys.-Math.), Leading Research Scientist, Kotel-nikov Institute of Radio-Engineering and Electronics of RAS (Fryazino). E-mail: nazarov@ire.rssi.ru P.V. Shishkin - Head of Sector, JSC Academician M.F. Reshetnev «Information Satellite Systems» (Zheleznogorsk)