A demo for the performace evaluation of different kinds of Kalman filters, including the conventional Kalman filter (KF), the unscented Kalman filter (UKF), the extended Kalman filter (EKF), the embedded/imbedded cubature Kalman filter (ICKF/ECKF), the third-degree cubature Kalman filter (CKF) and the fifth-degree cubature Kalman filter (FCKF).