第一百九十二章 战忽局来电
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砷毕竟是有毒物质,接触多了对身体不好。龙腾小说网ltxsba.com
而氮元素空气中到处都是,钢镚虽然只能吃纯金属,不过控金属元素合成一些金属化合物却一问题都没有。
在钢镚的控下,目前主要存在于世界各国实验室中的氮化镓元器件不要钱似生产出来,并且不停地组装成一个个性能强大的相控阵雷达t/r组件。
陈新将这些元器件装箱,然后搬到中型厢式货车上。
两人通力合作,在租住的公寓中竭力奋战了五天,才把一百公斤的镓元素全部搞定。
当然了,这些氮化镓t/r组件中,陈新还让钢镚对其波段进行了详细的适用范围划分,以适应不同功能的雷达。
对于雷达波段,想必大部分人都曾听说过。
像l、s、c、x等都是电磁段的划分代号。
最早用于搜索雷达的电磁长度为23cm,于是这一波段就被定义为l波段(英语long的字头),后来人们将这一波段的中心波长度变为22cm。
而当波长为10cm的电磁波被使用后,其波段被定义为s波段(英语short的字头,意为比原有波长短的电磁波)。
而在主要使用3cm电磁波的火控雷达出现后,3cm波长的电磁波就被称为x波段,因为x代表坐标上的某。
为了结合x波段和s波段的优,逐渐出现了使用中心波长为5cm的雷达。该波段被称为c波段(c即promise,英语“结合”一词的字头)。
在英国人之后,德国人也开始独立开发自己的雷达,他们选择1.5cm作为自己雷达的中心波长。这一波长的电磁波就被称为k波段(k=kurtz,德语中“短”的字头)。
“不幸”的是,德国人以其日尔曼民族特有的“精确性”选择的波长可以被水蒸气强烈吸收。结果这一波段的雷达不能在雨中和有雾的天气使用。
所以二战后设计的雷达为了避免这一吸收峰,通常使用频率略高于k波段的ka波段(ka,即英语k-above的缩写,意为在k波段之上)和略低(ku,即英语k-under的缩写。意为在k波段之下)的波段。
不过陈新并没有让钢镚生产出上述所有波段的t/r组件。而是主要以x波段以及s波段为主。
这样做也是有原因的,一方面,s波段是目前所有国家中距对空警戒雷达的首选,比如美国“阿利.伯克”级导弹驱逐舰上所使用的宙斯盾系统以及英国新一代45型导弹驱逐舰上所使用的“桑普森”相控阵雷达。都是基于s波段研制的。
相比于精度更高的x波段雷达。s波段雷达并没有精确引导导弹的能力。一般只能对于装有主动雷达导引头的舰空导弹进行中距引导,而对半主动制导的导弹则无能为力了。
所以目前欧美各国一直在试图将舰载相控阵雷达改装成s/x双波段雷达,使其同时具备远距离跟踪探测以及高精度制导的能力。
x波段雷达则被普遍用于火控雷达以及机载相控阵雷达。两者在军事上都有着非常广泛的用途。
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