由于19世纪40年代雷达的出现,迫使飞机进一步降低了它的飞行高度。由于预瞥时间的减少及地球曲率和地形遮蔽的影响,减少了交战的时机。因此,低空飞行的飞机就对地面和海上的目标构成了一种特殊的威胁。最近,由于战场直升飞机作超低空跃升机动飞行从后面掩护,小型掠海飞行的反舰导弹的效率提高,以及反坦克制导武器的迅速增长,增大了高速低 The advent of radar in the 1840s forced the aircraft to further reduce its flight altitude. Due to the reduction of pre-glimpse time and the influence of earth curvature and topography, the timing of fighting is reduced. As a result, aircraft flying at low altitudes pose a particular threat to ground and sea targets. Recently, the efficiency of small-scale, sea-flying anti-ship missiles and the rapid growth of antitank-guided weapons have increased the high-speed low due to the cover of the battlefield helicopters from behind the low-altitude jumbo maneuvers.