射击仿真过程中的命中判断方法研究

A STUDY ON THE METHOD OF JUDGEMENT FOR TARGET HITTING IN SHOOTING EMULATION

本文对于射击飞行数字仿真中弹丸命中目标的判断方法进行研究。通过对命中必要条件的研究 ,将判断过程局限在目标附近的较小范围中 ;通过建立目标等效体对目标外形进行简化 ,利用运动学原理将弹丸和目标在地面坐标系中的运动转化为弹丸在目标坐标系中的相对运动 ,从而建立相应的运动方程 ,通过计算弹丸运动轨迹与目标等效体表面的交点获得命中信息 ,使计算量大大减少、判断过程具有独立性并适合于在计算机上实现。判断方法除给出命中坐标外还给出着速和着角 。

This paper studies the method of judgement for target hitting in digital shooting emulation. By studying the necessary conditions of hitting the target, the judgement process is limited in a smaller area near the target; One can then establish a target equivalent that may predigest the target shape. Using kinematics theory, the movement of the bullet and target in ground coordinates can be transformed to the relative movement of the pullet in the target coordinates. Then the corresponding movement equation can be established and point of intersection of the calculated bullet movement track and the target equivalent surface will furnish information of hitting the target. Calculations can be greatly reduced. The judgement process becomes independent and adaptable for computer. The method provides landing velocity and landing angle besides the coordinates of hitting the target, and offers conditions for validity judgement of hitting the target.