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arXiv 2208.03378astro-ph.EPastro-ph.IMcs.SYeess.SY
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小行星近距自主快速探测

Autonomous Rapid Exploration in Close-Proximity of an Asteroid

Rodolfo Batista Negri, Antônio Fernando Bertachini de Almeida Prado, Ronan Arraes Jardim Chagas, Rodolpho Vilhena de Moraes

AI总结:

针对小行星近距探测中地面在环方案过度依赖预先降低不确定性的问题,本文提出以鲁棒制导与控制直接处理不确定性的自主GN&C范式,并证明其可显著缩短任务时间、降低成本。

摘要:

日益增多的航天任务可能使地面支持基础设施不堪重负,这促使人们需要自主的深空制导、导航与控制(GN&C)系统。这些系统能够提供可持续且具有成本效益的解决方案,尤其适用于应对不确定环境的小行星任务。本研究提出一种范式转变,以区别于当前文献中已有的自主小行星探测方案;这些方案沿袭了地面在环方法的保守架构,严重依赖在近距操作之前降低不确定性。相反,本研究主张采用鲁棒制导与控制来直接处理不确定性,而无需开展大量导航活动。基于一系列保守假设,我们利用现有技术证明了这种用于机器人航天器的自主GN&C的可行性。结果表明,更大胆的运行方式能够使自主航天器将探测时间显著缩短数周或数月。这一范式转变在未来自主任务中具有降低成本和节约时间的巨大潜力。

英文摘要:

The increasing number of space missions may overwhelm ground support infrastructure, prompting the need for autonomous deep-space guidance, navigation, and control (GN\&C) systems. These systems offer sustainable and cost-effective solutions, particularly for asteroid missions that deal with uncertain environments. This study proposes a paradigm shift from the proposals currently found in the literature for autonomous asteroid exploration, which inherit the conservative architecture from the ground-in-the-loop approach that relies heavily on reducing uncertainties before close-proximity operations. Instead, it advocates for robust guidance and control to handle uncertainties directly, without extensive navigation campaigns. From a series of conservative assumptions, we demonstrate the feasibility of this autonomous GN\&C for robotic spacecraft by using existing technology. It is shown that a bolder operational approach enables autonomous spacecraft to significantly reduce exploration time by weeks or months. This paradigm shift holds great potential for reducing costs and saving time in autonomous missions of the future.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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