METHOD OF CELESTIAL ORIENTATION OF THE ORBITAL SPACECRAFT (VARIANTS) Russian patent published in 2023 - IPC B64G1/24 B64G1/36 

FIELD: orbital spacecraft (SC).

SUBSTANCE: orientation of an orbital spacecraft (SC) using a star tracker. Proposed method uses an algorithm that uses the Euler finite rotation vector (FRV). Based on ballistic data, the readings of the star tracker and the block of gyroscopic sensors of angular speeds, the components of the FRV and its derivatives are calculated, which are transmitted directly to the executive bodies of the spacecraft. This provides high-quality control of the rotation of the spacecraft to combine the associated and orbital coordinate systems (OCS). For program rotation of the spacecraft relative to the OCS, a program coordinate system (PCS) is introduced in the form of program angles and program angular velocities of the spacecraft relative to the OCS, providing an improvement in the quality of transients. In this variant, the components of the FRV are calculated relative to the PCS.

EFFECT: increase in the accuracy of the orientation of the spacecraft relative to the OCS.

1 cl, 5 dwg