文中基于卫星相对运动状态转移方程，推出了星座双脉冲式变轨控制的理论解；

In this paper, thinking of three-satellite constellation, optimal impulse orbit transfer is studied for constellation launching.

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从介绍蚂蚁系统出发，提出了新的状态转移规则及全局修正规则，结合这些新规则设计出一个新算法，该算法是一个分布式并行算法。

The ant colony system is introduced and a new algorithm for TSP is presented. This algorithm is a distributed parallel algorithm with a new state transition rule and new global updating rule.

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以三次多项式为例，构建了状态转移矩阵和其它参数；

Taking cubic polynomial for instance, it built state transition matrix and other parameters;

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