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APPLICATION OF THE METHOD OF VIRTUAL MEASUREMENTS OF STARS ZENITH DISTANCES IN SOLVING THE ORIENTATION PROBLEM

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Application of the method of virtual measurements of stars zenith distances of in spacecraft orientation system are considered, results of modeling the orientation system operation with various algorithms for solving navigation problems are presented. The problem of orientation is solved based on determining the orbit of the spacecraft using two charge-coupled optical-electronic devices (OEDs) installed in gimbal suspensions to be pointed at specially selected bright stars in the sky. The spacecraft orbit determined according to the information from the OEDs is used by the algorithm for solving the orientation problem. Information from the third (possibly the fourth) OED rigidly connected to the spacecraft body is applied to determine parameters of the spacecraft body orientation in space using special mechanisms and algorithms of the least squares method for data averaged over a measuring interval.

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