A rapid endgame performance analysis method for exoatmosphere interceptor based on CADET

The relative equations between interceptor and target are conducted in rotation coordinate of Line of Sight. An error propagate model of LOS rate is established which is based on CADET (Covariance Analysis Describing Function Technique). This model takes several factors into consideration, such as estimate error of LOS rate, acceleration saturation of interceptor, sampling rate. A set of analytical solution is acquired. The uncertainty of Zero Effort Miss distance can be got conveniently according to the variety of LOS rotate rate. Finally, a contrast simulation with Mont-Carlo is taken to demonstrate the preciseness and efficiency of the method proposed in this paper.