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在应用数字仿真法研究导弹地形跟踪飞行的撞地概率时，首先要对导弹飞越的真实地形进行数值模拟．在充分探讨了地形模型和随机过程实现的基础上，采用波叠加法仿真了３ 种典型地形．研究了子波数对仿真结果的影响，说明选取一定数目的子波即可得到满意的结果．该工作对武器系统评估及撞地概率研究有重要应用价值．
When using digital simulation method to study the probability of land-based missile crashing, we must first simulate the real terrain over which the missiles fly. On the basis of fully discussing the terrain model and the realization of stochastic process, three kinds of typical terrain were simulated by wave superposition method. The effect of wave number on the simulation results is studied, which shows that the satisfactory result can be obtained by selecting a certain number of wavelets. This work has important application value in the assessment of weapon system and the probability of impact on the ground.