Using the concept of pseudo control variable, a simple state equation is constructed which describes the relative motion between an anti-ship missile and a target ship.

利用伪控制变量的概念，建立了简单的描述反舰导弹与目标舰艇相对运动的状态方程。

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In 2008 the target ship managed to beat off a pirate assault half the time.

ECONOMIST: Piracy

It is a system that works pretty well if the target ship is paying attention and can notify the navy in time and get all of the crew under cover.

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