基于数字地图预处理的低空突防航迹规划  

Low Altitude Penetration Trajectory Planning Based on Digital Map

作　　者：梁伟[1] 李新国[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072

出　　处：《飞行力学》2008年第4期81-85,共5页Flight Dynamics

摘　　要：为保证飞行器能够实现所规划的航迹,研究了将地形及飞行器性能等信息融合构造虚拟地形表面的数字地图预处理方法,包括数据插值具体步骤和地形平滑处理方法。通过设计综合地形跟随、地形回避、威胁回避(TF/TA2)的目标函数,对最小威胁曲面进行转化,提高了实时航迹规划的速度,采用微分进化(DE)优化算法,实现了三维TF/TA2最优实时航迹规划。仿真结果表明,此地图预处理和实时航迹规划算法是有效可行的。To make sure the designed trajectory applicable for the aircraft, preliminary treatments for the digital map, which combining the information of terrain and aircraft performance to construct a virtual terrain surface, were researched. The treatment included the detailed step of interpolating data at the point where the original terrain information could not be got, and smoothing the terrain surface. By devising a cost function considering the requirements of Terrain following/terrain avoidance/threat avoidance （ TF/TA^2 ） , translating its form based on minimal threaten curve surface which improves the speed of flight trajectory planning, and using the differential evolution optimization method to realize a optimal real time three-dimensional trajectory. The simulation results demonstrate the validity of the treatment and algorithm.

关 键 词：低空突防 地形跟随 数字地图 航迹规划 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]