摘要
提出了一种雷达威胁环境下应用A*算法进行低空突防三维航迹规划的方法。首先对地形高程数据进行综合平滑处理,建立满足无人机机动性能要求的安全飞行曲面,并结合雷达威胁量化模型,计算出地形遮蔽雷达盲区的范围,最后在满足地形遮蔽雷达盲区的安全飞行曲面上运用A*算法规划出三维飞行航迹。仿真结果显示,该算法能简单、快速地获得三维最优航迹,易于工程实现。
A 3-D vehicle path planning method for low altitude penetration based on an A^＊ algorithm in radar threat conditions is proposed. Digital terrain information is processed by an integrated terrain elevation smoothing algorithm at first, and a safe surface which integrates the maneuverability of UAV and mathematical models of radar threat are built, a terrain masking radar blind space is calculated. The A^＊ algorithm is used to plan three-dimensional vehicle paths on the safe surface which satisfies the terrain masking radar blind space finally. The simulation result indicates the method could obtain optimal path in a 3-D environment and the path planning algorithm is simple, efficient and easily realized in engineering.
出处
《飞行力学》
CSCD
北大核心
2010年第1期47-52,共6页
Flight Dynamics
关键词
航迹规划
低空突防
数字地图
地形遮蔽雷达盲区
A*算法
path planning
low altitude penetration
digital map
terrain masking radar blind space
A^＊ algorithm
