Abstract: A flight path planning method based on DE（Differential Evolution） algorithm for hypersonic vehicle is proposed and simulated．Threat model is established．The model is projected into the equatorial plane．And a polynomial function with finite terms is used to approach the projection of actual flight path in the equatorial plane．So the flight path planning problem is simplified to the problem of searching the best series of values in the coefficient space of the polynomial function．Flight path in the equatorial plane can be generated by DE algorithm considering hypersonic vehicle’s characteristic．The actual flight path can be generated according to corresponding relation．Simulation results show that the generated flight path can automatically avoid threat．

Key words: hypersonic, flight path planning, flight path projection, Differential Evolution（DE）

摘要： 提出了一种基于差分进化算法的高超声速飞行器航迹规划方法并进行了仿真验证。建立威胁模型，将威胁模型投影到赤道平面内，利用一个有限项的多项式函数来逼近实际航迹在赤道平面内的投影，使航迹规划问题简化为在一个多项式系数空间中的搜索寻优问题。利用差分进化算法，鉴于高超声速飞行器特点，规划得到赤道平面内的航迹，根据对应关系，最后得到实际航迹。仿真结果表明，生成的航迹自动避开了威胁。

关键词: 高超声速, 航迹规划, 航迹投影, 差分进化