On Shooting Accuracy Of Shipboard Artillery To Maneuvering Anti-ship Missile

In recent years,with the upgrading of anti-aircraft weapons and continuous updating of anti-missile measures,anti-ship missiles have also adopted a variety of means of penetration to avoid the interception of shipboard weapons during the attack,and maneuvering trajectory is one of the important measures.At present and a period of time in future,the main form of the maneuvering trajectory is mainly serpentine,spiral and pendulum.For anti-ship missiles that use maneuvering trajectory flight,when they break through the blockade of medium-and long-range firepower,the near-anti-ship guns will assume the responsibility of defending the formation of the ships.This paper mainly studies and analyzes the impact of maneuvering anti-ship missile on shooting accuracy of shipboard artillery,and discusses the technical ways to improve the anti-missile firing performance of naval guns.Firstly,for the serpentine maneuvering trajectory,this paper uses the CV model,CA model and Singer model to describe the motion state of the anti-ship missile.Then the Kalman filter theory is used to track the trajectory of the maneuvering trajectory.By comparing the position,velocity and acceleration errors,it is concluded that the Singer model is more suitable for the tracking of maneuvering targets.Finally,the maneuver parameters and sampling time of spiral trajectory and pendulum trajectory are selected as the variables,the simulation analysis shows the relationship between the filtering accuracy and the variables.Since the "maneuvering" of the spiral and pendulum maneuvering trajectory is embodied as serpentine maneuvering trajectory in vertical or horizontal plane therefore the plane serpentine maneuvering target is selected as the representative to analyze its influence on the firing accuracy of the gun.Based on the mathematical derivation,the relationship between projectile miss distance and track rotation angle is obtained,and the simulation method is used to quantitatively analyze the influence of the fire control output on the shooting elements.The simulation results show that the increase of the filtering error leads to the increase of the error of the shooting elements,and there are two peaks in the off-target range during the target maneuver period.When the slant range is the same,the projectile flight time will become the main factor affecting the firing accuracy of the gun after the target track is rotated.Finally,using the result of the ballistic reconstruction obtained by the shot fitting,the off-target model and calculation method of the maneuvering target are given.On this basis,the simulation analyzes the influence of the target’s flight under three kinds of maneuvering trajectories on the miss distance of the projectile to calculate the interception capability of the shipboard artillery,to the end maneuvering target.