飞行器再入机动制导的一种新方法

基于飞行力学的原理，建立了飞行器攻击地面目标的运动方程，进而运用计算结构力学与最优控制的相似性原理，将求解Ｒｉｃｃａｔｉ方程的一种新方法引入飞行器再入机动制导问题中。由于采用的是结构静力学中的子结构消元法，从而避免了本征值问题的求解。该方法大幅度地提高了计算速度，同时具有很好的数值稳定性，计算结果表明该方法的有效性。

A New Method for Reentry Maneuver Guidance of Vehicle

Based on the flight dynamic principle, the motion equation of vehicle attacking the ground target is established, and then a new method for the solution of Riccati equation is introduced to the reentry maneuver guidance problem for the vehiclewith the help of the analogies between computational structural mechanics and optimalcontrol. Because the substructural condensation method in structural static mechanics isused, so the solution of eigen--value problem is avoided. The above method has the goodcomputation speed and stability. The numerical example shows this method is effective.