便携式导弹有威胁民用飞机的飞行线路和起降时间较为固定,而且在起飞和降落时,具有飞行速度慢、飞行高度低和机动性差的特点,给恐怖分子制造了比较好的攻击时机。同时飞机在起降的时候,飞行机组需要集中注意力观察发动机参数和其它飞行性能参数,以便及时发现异常和处理问题,在此期间若是受到攻击,无形中增大了驾驶舱负荷,难免会使飞行机组操作忙乱、顾此失彼,增大操作错误几率。因此民用飞机一般在起降阶段不但很难逃脱对空导弹的攻击,而且 Portable missiles have threatening civil aircraft flight routes and take-off and landing time is relatively fixed, and take-off and landing, with the characteristics of slow speed, low flight altitude and poor maneuverability, to terrorists to create a better attack timing. At the same time, when the aircraft is taking off and landing, the flight crew needs to pay close attention to the engine parameters and other flight performance parameters so as to find the anomalies and handle the problems in time. In the meantime, if attacked, the cockpit load will inevitably increase Flight crew operations are fussy, so lose one another, increasing the chances of operational errors. As a result, civil aircraft are not only difficult to escape from the attack of air-to-air missiles during takeoff and landing phases, but also