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