PROCEDURE MAKING PARAMETERS OF MOTION OF CENTER OF MASS OF SPACECRAFT MORE PRECISE Russian patent published in 2001 - IPC

FIELD: space navigation, specifically, systems of autonomous navigation. SUBSTANCE: altitude of flight of space craft above surface of planet is measured. Zenith distances of two stars are computed cyclically on basis of measurement of orientation angles of spacecraft and orientation of optical axes of astrosighting devices with reference to body axes system. Navigation parameters of spacecraft are determined with static processing of measurement information over measured section. Angles of orientation of spacecraft are made more precise in each cycle in addition. Values of zenith distances of stars are made more precise on basis of more precise values of angles and information on orientation of optical axes of astrosighting devices. More precise values are used for solution of navigation problem during current period. EFFECT: increased precision of determination of navigation parameters of spacecraft is provided. 1 dwg