“…Since 1965, a multitude of solutions have been proposed to resolve attitude estimation problem, such as TRIAD [21], QUaternion ESTimator (QUEST) [22], Singular Value decomposition method (SVD) [23], Kalman Filters (KF) [24,25,26,27,28], Extended Kalman Filters (EKF) [29,30,31,32,5], Unscented Kalman Filters (UKF) [33], Adaptive Kalman Filters (AKF) [34,35], Particle Filters [36] and more recently Observers [12,37,38,39]. A survey and an analysis of these methods can be found in [40].…”