基于数字地图的导弹可飞行面设计

数字地图预处理是导弹基于数字地图导航的关键技术,提出了一种考虑导弹最大飞行曲率限制的变步长数字地图预处理算法,该算法分区域采用曲率差控制平滑迭代步长,使平滑过程加快,提高迭代速度,平滑后的地形不仅能满足导弹的纵向机动能力的限制,而且能够较好地贴近原地形。最后对算法进行了仿真研究,仿真结果表明该算法可快速完成数字地图的平滑任务,能够为导弹提供理想的可飞行安全曲面。

Digital map based flyable surface design for missiles

The information used for low-altitude flight and penetration system is mainly from digital map.Aircraft avoids the obstacle and follows the terrain based on the information of terrain feature.Preprocessing of digital map is critical for missile navigation based on digital map.We put forward a variable step-size preprocessing method used for missile TF/TA considering the maximal curvature restriction of missile.In the algorithm different step size is used for different types of terrain.The smoothing algorithm that limits the curvature is improved so that it can speed up the calculating process and reduce the time for terrain smoothing.The terrain after smoothing not only satisfies the vertical maneuverability of the aircraft,but also is similar to original terrain in shape.We made simulation for the algorithm,and the result of simulation showed that such an algorithm can realize digital map smoothing rapidly,and supply a safe flyable surface for missiles.