Micro-satellite attitude angle rate estimation: Unscened Kaiman Filter approach

This paper presents the micro-satellite three axis attitude angle rate estimated from nonlinear filtering design method known as Unscened Kaiman Filter(UKF). It uses magnetometer (Earth s magnetic field) as the sole measurement sensor for satellite attitude angle rate determination without rate gyro and priori knowledge of the spacecraft state. Simulation results show that the algorithm can quickly converge even for large initial attitude state, and is accuracy and efficient.