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arXiv 2008.07157cs.RO
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地图在哪里?用于火星探测的迭代式Rover-Copter路径规划

Where to Map? Iterative Rover-Copter Path Planning for Mars Exploration

Japan Aerospace Exploration Agency(日本宇宙航空研究开发机构);Jet Propulsion Laboratory, California Institute of Technology(加州理工学院喷气推进实验室);Eindhoven University of Technology(埃因霍温理工大学)

Takahiro Sasaki, Kyohei Otsu, Rohan Thakker, Sofie Haesaert, Ali-akbar Agha-mohammadi

摘要:

除了常规的地面漫游车,火星2020任务还将向火星发送一架直升机。直升机的高分辨率数据有助于漫游者识别小的危险,如台阶和尖锐的岩石,以及提供丰富的文本信息,有助于预测感知性能。在本文中,我们考虑一个三代理系统组成的火星探测器,直升机和轨道器。我们的目标是提供良好的定位,以漫游车通过选择最佳的路径,最大限度地减少在漫游车的遍历过程中的定位不确定性积累。为了实现这一目标,我们量化的本地化作为一个良好的措施与地图,并进行联合空间搜索漫游者的路径和直升机的感知行动从轨道飞行器的先验信息。我们共同解决在哪里映射的直升机和在哪里驾驶的漫游车使用建议的迭代直升机漫游车路径规划。我们使用火星2020着陆点的地图进行了数值模拟,以证明所提出的规划器的有效性。

英文摘要:

In addition to conventional ground rovers, the Mars 2020 mission will send a helicopter to Mars. The copter's high-resolution data helps the rover to identify small hazards such as steps and pointy rocks, as well as providing rich textual information useful to predict perception performance. In this paper, we consider a three-agent system composed of a Mars rover, copter, and orbiter. The objective is to provide good localization to the rover by selecting an optimal path that minimizes the localization uncertainty accumulation during the rover's traverse. To achieve this goal, we quantify the localizability as a goodness measure associated with the map, and conduct a joint-space search over rover's path and copter's perceptual actions given prior information from the orbiter. We jointly address where to map by the copter and where to drive by the rover using the proposed iterative copter-rover path planner. We conducted numerical simulations using the map of Mars 2020 landing site to demonstrate the effectiveness of the proposed planner.

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