By the model, the change of mutual firepower control sections is forecast; finally it provides a thought of realizing the threat precaution simulating system of maneuver targets on the sea.

依据此模型对双方火力控制区的变化进行预测，最后给出了海上机动目标威胁预警仿真系统的实现思路。

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This paper studies how to detect the moving targets on the land and sea surface in the background of clutters by using pulse-pulse step frequency radar.

研究了用脉间步进频率雷达对杂波背景噪声下地面或海面动目标的探测。

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Infrared images for warship targets in sky -sea background have some characteristics, such as the low target-to-background contrast, great noise and so on.

海天背景下舰船目标红外图像的目标背景对比度低，噪声大。

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These ships, crewed by more than 350, play a key role in a modern carrier group, providing missile attacks against targets on land, sea or even in the air.

BBC: News | In Depth | Military Fact Files

The US Navy has expanded the role of its destroyers and the Arleigh Burke-class of vessels is designed to launch simultaneous attacks against targets on land, in the air, at sea and below it.

BBC: News | In Depth | Military Fact Files