中文摘要：

为了在引战配合仿真系统中提高战斗部破片命中点参数（破片的打击动能、落角、命中数目、命中点坐标等）的精度,推导了一种精确计算破片命中点参数的算法。在计算命中点参数时考虑了破片速度衰减的影响因素,提出了通过破片的包围球依次遍历目标模型各部件包围球的碰撞检测,再用3D射线局部遍历目标面元求解命中点参数的计算模型。该算法相对于传统方法极大地提高了程序的运行效率和计算精度,直观地显示了引战配合效果和对目标的毁伤程度。计算结果表明,通过给定多种引战配合仿真实例,由该可视化仿真系统可精确得到不同仿真实例中每枚破片命中点参数数据,验证了算法的可行性,可为进一步提高引战配合效率提供参考。

英文摘要：

To improve the precision of hitting-point parameters of fragment in simulation of fuze- warhead matching coordination including fragments hit kinetic energy, impact angle, number of hits, hit point coordinates, etc. , the algorithm was deduced to accurately calculate the hitting-point parameters, and the factors affecting the velocity of fragment was considered. The impact- detection method of traversing the parts of the target model by hounding sphere was proposed, and then 3D ray shot-line was used to partially traverse the target surface-elements to get hitting- point parameters calculation model. Compared with the traditional method, the algorithm greatly improves the efficiency and accuracy,and the effects of simulation of fuze-warhead matching and the extent of damaging the target are intuitively displayed. Given the simulation example of fuze- warhead matching, the hitting-point parameters of each fragment can he obtained accurately by vi- sualization simulation system ,and the algorithm is feasible, and it offers reference for further im- proving the efficiency of fuze-warhead matching.