A RAM Projectile Prediction Method Based on Ballistic Trajectory Integration

A existing C (counter)-RAM (rocket, artillery, mortar) weapon system uses interacting multiple model (IMM) algorithms to predict the trajectory of RAM projectile, which cannot accurately describe the ballistic bending process of RAM projectile in the descending phase, resulting in large fire control calculation error. To solve this problem, a RAM projectile prediction method which can perform trajectory integration without enemy projectile parameters such as aerodynamic coefficient, projectile diameter, cross-sectional area is proposed. Assuming that the drag coefficient of two adjacent steps of trajectory integration of RAM projectiles are approximately equal, the drag term can be directly predicted by integrating the motion characteristic data of two consecutive points which filtered out by fire control, and then solving the hit point calculation of shooting data can be performed. This method has been double validated by simulation and experiment, shot down the rocket projectile successfully, and has universality, which can be extended to the trajectory prediction of other weapon systems. It provides a new technical support for improving the fire control accuracy of C-RAM weapon system.