Target Tracking for Maneuvering Reentry Vehicles with Interactive Multiple Model Unscented Kalman Filter

When tracking maneuvering reentry vehicles,an ex- tended Kalman filter with maneuvering reentry vehicle(MaRV) model is usually used in a traditional method.To increase the performance of maneuvering target tracking two efforts are made.On the one hand,a more appropriate multiple model method is used in describing movement properties of the maneu- vering target,on the other hand,the Unscented Kalman filter implying higher order precision is adopted in respective matching model.For numerical problems which are often encountered in implementing this interactive multiple model Unscented Kalman filter,a numerical robust solution is given by using square root filtering.