基于地面防御约束的飞行器再入轨迹优化研究

摘要

针对不同防御阵地位置与防御半径,利用Radau伪谱法进行了机动再入飞行器最短时间突防轨迹的优化研究,分析发现,随着防御半径的增加,飞行器依靠空气动力进行侧向机动规避较难实现,并且当防御阵地靠近目标点时,飞行器可机动规避的范围较小,但由于其飞行高度的特殊变化,使得地面防御力量仍然难以实施有效拦截.计算结论对再入飞行器突防轨迹的设计以及地面防御力量的部署都具有一定的参考价值.%Aiming at two different locations of no-fly zones, Radau pseudo spectral method is used to solve the optimal reentry trajectories of maneuverable vehicle for shortest time satisfying the diversified radius of no-fly zones. The results show that with the increasing of the radius, the vehicle is difficult to e-lude by aerodynamic maneuvering, and when the location is closed to the reentry point, the vehicle could only elude in a small radius by aerodynamic maneuvering, but due to the special trajectory, the ground base interceptor could not destroy the maneuverable vehicle effectively. The results are useful for both the designs of striking trajectory and the deployment of fortifications.