载人飞船的一种混合再入制导方法

提出了载人飞船的一种混合再入制导方法，即在制动段结束后的过渡段，利用落点预报及其制导规律在轨生成一条基准再入弹道，在再入段利用基准弹道制导规律实现再入升力控制的一种方法。该方法融合了落点预报制导方法和基准弹道制导方法的长处。相对基准弹道制导方法，该方法可对付较大的初始误差，达到较高的精度；相对落点预报制导方法，在再入段减少了计算量。数学仿真结果验证本方法是有效的。

A Kind of Mixed Reentry Guidance Method for Manned Spacecraft

This paper presents a kind of mixed reentry guidance method(MRGM) for manned spacecraft. In transition phase followed braking phase, a standard reentry trajectory is computed and stored using landing point prediction guidance method(LPPGM). In reentry phase, with the standard trajectory above, lift force control is realized using the standard trajectory guidance method(STGM). MRGM has the advantage of both LPPGM and STGM.MRGM can cope with bigger initial error and achieve higher accuracy compared with STGM, and meantime, it can reduce computation in reentry phase compared with LPPGM. The results of mathematical simulation here proved the availability of MRGM.