【摘要】 对于在任意的载机对目标位置速度指向上，受可用过载的约束，能否操纵飞机构成正确的投放条件这一空-地攻击决策系统所要解决的基本问题，给出两个判据，分别基于两种载机导引策略：角误差比例导引律和通常的比例导引律．证明了角误差比例导引律在大范围内保证了走向误差的指数收敛．并指出，空-地攻击的诀策问题与任务解算是不可分高的．更多还原

【Abstract】 For air-to ground missions, a fundamental question that must be answered by tactics planners can be asked as follows. Is the aircraft in a favorite position and heading to attack a designated target? This paper is written to provide two criteria that may partially answer the above question. The first criterion is obtained assuming that the attacker be steered by a command to line of sight (CLOS) tactic, whilst the second assumes that the attacker be guided by a standard proportional navigation (PN) law. In deducing these criteria, we introduce a cylinder coordinate frame, which seems more suitable for air-to ground mission planning. Further, in terms of geomethc approaches and Lyapunov analysis, we are able to show that the two tactics exponentially nullify the angular errors even when initial errors are large. Finally, computational considerations and numerical examples are given for illustrative purpose.更多还原