Spin Motion Estimation for In-Orbit Spacecraft with Abnormal Attitude Using Doppler Measurements of Ground Stations

This paper proposes a new approach for spin motion estimation for in-orbit spacecraft using doppler measurements of ground stations. The magnitude of the angular velocity vector is firstly estimated using the spectrum of the spin motion induced velocity, and its direction is estimated then using the adjustment algorithm. Simulations have been conducted for validation of the proposed approach, which demonstrates the effectiveness of the estimation.