判定在可进行地形匹配的区域是否存在合适的地形匹配区,也就是相应的数字高程基准图,是航迹规划的重要工作步骤之一,现在主要由人工辅助完成。根据数学形态学的基本思想,文中提出将基准图在水平面的投影作为结构元素,将匹配区在水平面的投影作为目标图像,再利用结构元素探测目标图像,进而自动判定是否存在合适的地形匹配区。实验证明该方法是可行的,从而为提高航迹规划自动化程度打下良好基础。

Judging the existence of matching area, which is digital elevation basis diagram, in the map suitable for matching, is one of the key steps in cruise missile path planning. It is completed mainly by handicraft nowadays. According to the basic ideology in mathematical morphology, a new method was proposed in this passage that the cast shadow on the horizontal plane was produced by the basis diagram. Considered as the structuring element, it was used to probe into the cast shadow produced by matching area and considered as destination diagram. Then, the digital elevation basis diagram was settled down automatically. Experiments prove this is feasible. It also paves the way for improving the automatic degree of path planning.