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研究了巡航导弹的撞地概率和系统参数选择的关系问题。首先在考虑了地形随机输入和低空风随机干扰共同作用的情况下，推导了撞地概率的计算方法。其次以导弹主要参数（ａ２４和Ｋｈ）的选择为例，在给定条件下求出了它们和撞地概率的关系曲线，并分析了它们对撞地概率的影响。研究结果表明，协调选择ａ２４和Ｋｈ等参数，能有效降低撞地概率，提高巡航导弹的作战效能。
The relationship between the probability of collision of cruise missiles and the choice of system parameters is studied. Firstly, the calculation method of the probability of collision is derived under the condition of random input of terrain and random disturbance of low-level wind. Secondly, taking the selection of missile main parameters (a24 and Kh) as an example, the relationship between them and the probability of collision is obtained under the given conditions, and their impact on the probability of collision is analyzed. The results show that the coordinated selection of parameters such as a24 and Kh can effectively reduce the probability of collision and improve the combat effectiveness of cruise missiles.