蛇形机动目标航迹旋转对射弹脱靶量的影响

Impact of space rotation on shell miss distances for serpentine flight path maneuvering

结合蛇形机动目标对抗舰炮或高炮的作战过程,定义了航迹直角坐标系和航迹旋转角,在最小二乘法下建立了一次假定和二次假定的平滑滤波模型,推导出目标运动参数、理想弹着点和射弹脱靶量的函数关系式,证明了航迹旋转并不影响目标运动参数的求取,但是能够引起射弹脱靶量的变化,其原因在于理想弹着点位置的旋转影响了射弹飞行时间。若此因素可忽略,则旋转角度与脱靶量无关。对主运动方向指向炮位原点的目标进行了仿真,验证了上述结论。

Targets maneuver along serpentine paths to avoid naval or antiaircraft gun fire.A method was developed to track a target＇s path and identify the target＇s rectangular coordinates and rotation angles.Least square filter models are then defined assuming first-order and second-order motion to predict the target motion,bomb impact points and shell miss distances in functional forms.Rotations of the flight path do not affect the filtered parameters for the target motion,but do affect the miss distance.Rotations of the bomb impact point change the shell＇s flight time.If the change in the flight time is ignored,the miss distance and the rotations do not affect the calculations.Finally,targeting of gun emplacements was simulated to verify the conclusions.