Study on Attitude Deviation of Spacecraft Subjected to Random Disturbance Torque based on Covariance Analysis

The attitude stability requirements of spacecraft are closely related to their application scenarios. Spacecraft's motion will always be affected by internal and external disturbances during its orbital movement, which makes the attitude no longer meet the stability requirements of the mission design convention. This paper focuses on the study of the effect of random disturbance torques on the spacecraft attitude. The basic covariance method is proposed to study the influence of random disturbance torques on the spacecraft attitude. The simulation results show that the method of covariance analysis can be applied to study the attitude deviation of spacecraft due to random disturbances.