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战争常常是从拉响警报开始的。 我们常在电影里看到这样的情节:山顶上的少年发现了敌人,推倒身边的小树,村民们看见小树倒了,就迅速隐蔽起来。这就是原始的警报或者称为早期告警。其实,早在1000多年以前人们就已经用烽火作为警报信号传递敌情了。在高技术军事装备迅猛发展的今天,作战的区域早已从地面扩展到海上和空中。高速飞行的战斗机可以在3分钟内跨越超过100千米的距离,把战区的范围扩大到方圆数百千米。能够提前发现敌人,哪怕是提前几十秒,对作战双方都是至关重要的。于是号称“千里眼”、“顺风耳”的预警机应运而生了。
The war often starts with ringing the alarm. We often see the plot in the movie: The juvenile on the hill found the enemy and pushed the tree around him. When the villager saw the tree fell, he quickly concealed it. This is the original alarm or early warning. In fact, as early as more than 1,000 years ago, people had already used flames of fire as an alarm signal to convey their admiration. Today, with the rapid development of high-tech military equipment, the combat zone has long been extended from the ground to the sea and the air. High-speed flying fighter aircraft can fly over 100 kilometers in 3 minutes and extend the theater's reach to hundreds of kilometers. Being able to find enemies in advance, even tens of seconds in advance, is crucial to both sides of the war. So-called “Clairvoyant”, “downwind ear” early warning aircraft came into being.