what is unscented kalman filter what is the unscented kf algorithm? what is an unscented kf what are the functions of kalman filter why do we need to use augmented vector augmented vectors in kf algorithms what is an observation vector what is the augmented vector for an observation vector what is unscented kf what is kf filter? when to use unscented kf in kfish what functions are included in unscented kf why is the augmented vector unscented augmented vectors for process and observation what is unscented kalman filter used for what is unscented kf what kind of kf filter is used which augmented vector does kalman filter use? why do we need to work with an augmented vector what is augmented vector?