V.V. Popovich – Dr.Sc.(Eng.), Professor, Main Designer, 

CJSC «SPIIRAS-Scientific and Technical Bureau of High Technology» (Saint Petersburg)

E-mail: popovich@oogis.ru

L.A. Vedeshin – Dr.Sc.(Eng.), Research Scientist, 

Space Research Institute of RAS (Moscow)

E-mail: vedeshin40@mail.ru