Journal
IEEE ROBOTICS AND AUTOMATION LETTERS
Volume 5, Issue 2, Pages 2169-2176Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LRA.2020.2970980
Keywords
Aerial systems; perception and autonomy; search and rescue robots; robotics in hazardous fields
Categories
Funding
- Research Center for Informatics [CZ.02.1.01/0.0/0.0/16 019/0000765]
- CTU [SGS17/187/OHK3/3T/13]
- CSF [17-16900Y, 17-27006Y]
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In this letter we present an autonomous system intended for aerial monitoring, inspection and assistance in Search and Rescue (SAR) operations within a constrained workspace. The proposed system is designed for deployment in demanding real-world environments with extremely narrow passages only slightly wider than the aerial platform, and with limited visibility due to the absence of illumination and the presence of dust. The focus is on precise localization in an unknown environment, high robustness, safety and fast deployment without any need to install an external infrastructure such as an external computer and localization system. These are the main requirements of the targeted SAR scenarios. The performance of the proposed system was successfully evaluated in the Tunnel Circuit of the DARPA Subterranean Challenge, where the UAV cooperated with ground robots to precisely localize artifacts in a coal mine tunnel system. The challenge was unique due to the intention of the organizers to emulate the unpredictable conditions of a real SAR operation, in which there is no prior knowledge of the obstacles that will be encountered.
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