The method of increase of availability of high orbit spacecraft navigation support by GLONASS

Results of research of the existing conditions of high-orbitał users navigation support by GNSS signals are given in article. The way of modernization of GLONASS system for increase of availability and accuracy of high-orbitał users navigation support is offered. The author shows the possibility of reasonable increase of availability and accuracy of high-orbital users navigation support in the area up to the heights of the Moon orbit, which opens the possibility of spacecraft autonomous navigation by GLONASS signals on the flight route from the Earth to the Moon and in the circumlunar orbit. The basic requirements to the directional diagram, the type of navigation signal and the power of onboard signal transmitting equipment for space users are presented.