高超声速滑翔飞行器滑翔段预测-校正制导研究

为了满足高超声速滑翔飞行器再入制导过程中的终端约束和过程约束，针对滑翔段具有不确定初值和气动干扰的滑翔再入问题，联合三维轨迹快速在线生成技术和模型预测静态规划（MPSP）技术提出了一种改进的MPSP预测-校正制导律。建立了基于能量的高超声速滑翔飞行器的运动学模型，详细推导了MPSP预测-校正制导理论。构建了基于三维快速轨迹规划的初值生成器，探讨了初始下降段对滑翔段的影响因素。针对滑翔段初值干扰和气动参数摄动问题，设计了预测-校正制导律，进行了数字仿真。仿真结果表明，改进的MPSP预测-校正制导方法能够有效利用精确的猜测值，对干扰初值和气动摄动具有较强的鲁棒性。

The research of the predictor-corrector guidance of gliding phase for hypersonic gliding vehicle

To meet the demands of terminal and path constraints during the reentry phase considering the perturbations of the initial values and aerodynamic parameters, an improved MPSP predictor-corrector guidance law is developed which combined rapid generation of three dimensional trajectory and model predictive static programming(MPSP). The kinematic model of the hypersonic gliding vehicle is built based on energy, and the predictor-corrector guidance theory of MPSP is deduced in detail. The initial value generator is founded using the rapid generation of three dimensional trajectory, and based that the influence factors from the initial decent phase to the gliding phase are investigated. The digital simulation is carried out taking advantage of the predictor-corrector guidance in gliding phase considering perturbations of the initial values and aerodynamic parameters. The results turn out to be that the improved MPSP predictor-corrector method could have the advantages of precise initial guess values and strong robustness to the perturbations.