The launch opportunities are searched based on the combination of differential evolution algorithm and indirect method using two strategies. Simulation result shows that the optimal launch opportunity can be found based on the combination of DE algorithm and indirect method.
首先建立了动力学方程,推导出最优化模型,然后使用两种策略采用DE算法与间接法相结合的方式对火星探测器发射机会进行了搜索,最后进行了仿真分析。
参考来源 - 小推力火星探测器发射时机搜索方法·2,447,543篇论文数据，部分数据来源于NoteExpress
It was this lack of information that prompted the launch of I'm First in 2013, originally as an arm of its umbrella organization, the Center For Student Opportunity.
正是这种信息的缺乏促使“我是第一代”组织在2013年成立，它最初是联盟组织“学生机会中心”的一个分支。
The Mars rovers Spirit and Opportunity were three years away from launch, while the Cassini-Huygens probe was not quite half-way to Saturn.
精神号和机遇号火星探测器已发射三年了，而卡西尼-惠更斯号探测器还在飞往土星的半路上。
We are here to launch a report, and we are here to seize an opportunity.
在这里，我们要发起一份报告，要抓住一次机遇。
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