分导飞行器试验运载火箭分导策略研究

Study on Independently-Targeted Strategy of MIRV Flight by Launch Vehicle

分导策略即研究一发火箭发射多个分别沿不同轨道瞄准不同目标或同一目标飞行器的方法,首先分析弹道特点,然后分别对纵向距离分导、横向距离分导、纵横向距离同时分导、对同一落点的分时分导、两次以上的分导等5种不同分导策略,利用卫星轨道力学理论逐一开展分析并推导速度增量的计算方法,最后给出基于速度增量在参考坐标系上的偏导数投影得出最优的分导策略控制方法。

The independently - targeted strategy is defined as several re - entry vehicles launched into dif- ferent trajectories, aiming at different targets or the same target by one launch vehicle. The analysis and study have been performed on independently - targeted strategies. The features of trajectories are analyzed firstly. Then five different independently - targeted strategies are studied, including longitudinal perform- ing, lateral performing, omni -directional performing, the same point aiming and more than twice targe- ting and the orbital mechanism is used to develop the velocity increment calculation method. Finally, the optimal control method for independently -targeted strategies based on the partial derivative projection of ve- locity increment in reference frames is presented.