用于TF/TA仿真试验的数字地形模型研究

采用数字仿真方法进行TF/TA实验时，需要生成飞行器在实战中可能遭遇到的各种真实地形场景。为了借助计算机模拟方法产生所需各种复杂多变的数字高程模型，提出了改进分形几何法和数学函数法来自动生成数字地形模型的方法。前一种方法可以根据需要控制地形的光滑度，可以为视景仿真系统提供具有细部特征的真实感地形；第二种方法产生的几种典型地形突出了不同地域的地形特点，多用于TF/TA算法的验证。大量的仿真结果说明了这些方法的可行性。

Research on Digital Terrain Models Used for TF/TA Simulation

When adopting digital simulation approach on TF/TA experimentation, it is requisite to build manifold authentic terrain scene that aircraft will encounter during actual combat. For obtaining complicated and diversiform DEM via computer simulation, this paper presents an improved fractal geometric method and a mathematical function method used for automated generation of digital terrain models. The first method can regulate the smooth of terrain by requirement, so it can provide terrains that possess detail characteristic for visual simulation system, and the second method pops out the characteristic of multifarious terrain used for TF/TA algorithm validating. Large numbers of experimental results show the feasibility of these methods.