ground surveillance radar

基本解釋

Northrop Grumman Corporation has been awarded the first phase of a ＄30 million firm-fixed price U.S. Air Force contract to develop a global space surveillance ground radar system.
諾斯羅普·格魯曼公司已經(jīng)獲得了美國空軍第一階段價值3000萬美元的合同，以研發(fā)全球空間監(jiān)視地面雷達系統(tǒng)。
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This proves that the one-dimensional trajectory amendments mode of ground radar surveillance and progroud fire-control center control is entirely feasible and can achieve low-cost and miniaturization.
由此可見，采用地面雷達導(dǎo)航、由地面火控中心發(fā)射指令的一維彈道修正方式完全可行，并可以做到低成本，小型化。

That makes Raytheon, which produces missiles, defence electronics, radar and ground surveillance systems, especially attractive.
ECONOMIST: Transatlantic aerobatics