Extraction of Ballistic Coefficient of Reentry Warhead Based on Unscented Kalman Filtering Smoothing
Cheng Bai-lin · Fire Control and Command Control · 2011
The experience of reentry heads reentering atmosphere is a typical nonlinear process,in which there is perturbation.Because perturbation exists,the time-varying model of ballistic coefficient is adopted;because of non-linearity,unscented Kalman filtering smoothing is adopted.Compared to unscented Kalman filtering,the new method improves the precision of ballistic coefficient extraction.