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football_goal_threaten

足球球门威胁度建模分析

问题提出:

在足球比赛中,球员在对方球门前不同的位置起脚射门对球门的威胁是不一样的。在球门的正前方的威胁要大于在球门两侧射门;近距离的射门对球门的威胁要大于远射。
已知标准球场长104米,宽69米;球门高2.44米,宽7.32米。
实际中,球门之间的基本素质可能有一定差异,但对于职业球员来讲一般可以认为这种差别不大。另外,根据统计资料显示,射门时球的速度一般在10米/秒左右。
请结合球场和足球场的实际情况建模分析,研究如下问题:
  • 针对球员在不同位置射门对球门的威胁度进行研究,并绘制出球门危险区域;
  • 在有一名守门员防守的情况下,对球员射门对威胁度和危险区域进一步的研究。

模型分析

球门布局如下图 image 以球门底边中点为原点,地面为xoy面,球门竖直方向为yoz面,并记球门面为D。而球门所在的足球场竖直方向的平面为T。

image image image image

模型求解

image image image image

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