Star sensors BOKZ-M60 allow to find parameters that define the attitude of their own coordinate systems with respect to an inertial coordinate system by observing regions in the star sky. The accuracy of definition of attitude parameters is influenced by a great number of factors and we don’t estimate their individual contributions to the total error. On that reason, we analyze fluctuations of rather long series of definitions of attitude parameters received by BOKZ-M60 sensors in ground-based tests and in the conditions of a real space flight. This paper contains the accuracy estimations of the four star sensors BOKZ-M60 that were obtained by processing the measurement data from the spacecraft Resurs-P. The joint processing of measurements by two or more sensors increased the accuracy of determination of the spacecraft attitude and allowed to investigate random and systematic errors in the measurements.

Star sensor, spacecraft, attitude motion, orientation mode, reconstruction of motion by measurement data, accuracy evaluation

Theoretical and applied problems of mechanics