基于差分进化算法的再入可达域快速计算#br#

针对高升阻比高超飞行器再入可达域计算问题，提出了基于差分进化算法和倾侧角插值相结合的混合求解方案。通过设计罚函数和适应度函数极值化将再入过程等式约束和不等式约束添加到优化指标。为了减小参数化倾侧角剖面的搜索空间，利用带约束的差分进化算法求解满足再入过程约束和终端约束的再入轨迹。在分别得到最大横向航程和最大纵向航程的倾侧角剖面后，利用插值法快速生成倾侧角指令集，进而实现再入可达域的快速计算。以高升阻比飞行器CAV H为对象，设计仿真算例，结果表明，该混合优化求解方案易于实现且具有良好的可操作性。

Fast reentry landing footprint calculation using differentialevolution algorithm#br#

A hybrid optimization method based on differential evolution algorithm and bank angle interpolation was proposed for the reentry landing footprint calculation of high lift-drag ratio hypersonic vehicle. The reentry process equality constraints and inequality constraints were added to the optimization index by designing the penalty function and the fitness function maximization. In order to reduce the search space of the parametric bank angle profile, a constrained differential evolution algorithm was used to solve the reentry trajectory that satisfies the process constraints and terminal constraints. After obtaining bank angle profiles with the maximum cross-range and down-range voyages respectively, the interpolation bank angle method was used to quickly produce the bank angle command set, and then the fast calculation of the reentry landing footprint was realized. The simulation is designed with the high lift-to-drag ratio vehicle CAV-H. The results show that the hybrid optimization solution is easy to implement and has good maneuverability.