为丰富官兵在索马里海域护航期间的文体生活，海军护航编队"海口"号驱逐舰从9日开始举办甲板运动会。

Officers and sailors on the Chinese navy destroyer "Haikou" held a unique sports meeting on deck in the waters off Somalia Friday.

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在相对运动二冲量最优控制的基础上，求解了编队规划问题。

Based on two-impulse optimal control for relative motion, the formation planning problem is solved.

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给出了一种描述J2摄动情况下编队飞行卫星相对运动的精确解析模型。

A precision analytical equation to relative motion of formation flying satellites for J2 perturbation is presented.

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