Flight Trajectory simulation of Low Altitude Glide Maneuvering Missile using pitchturn rate and Impact Point estimation analytics

Ballistic missiles have an elliptical ballistic trajectory and fall at high speed, so the defence system was able to predict the point of impact. In the paper, the trajectory of a low-altitude glide maneuver type ballistic missile was simulated by adjusting the flight path angle using the pitch turn rate for each flight stage and entering the desired glide altitude during fall. As a result of the analysis, the flight time was longer as the peak altitude was lower and shorter as the peak altitude was higher, which was judged to be because the higher the altitude, the higher the average speed. In addition, the root mean squre error for the impact point of the simulated trajectory and the prediction result of the impact point was obtained. As a result of the prediction, the rmse is more than tens of km, and it was found that it is difficult to predict the point of impact when the missile is in the glide section. The results of this study are expected to be used for threat assessment of ballistic missiles of various trajectories, and for judging and selecting the possibility of engagement of response systems in the future.