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Online Exploration and Coverage Planning in Unknown Obstacle-Cluttered Environments | IEEE Journals & Magazine | IEEE Xplore

Online Exploration and Coverage Planning in Unknown Obstacle-Cluttered Environments


Abstract:

Online coverage planning can be useful in applications like field monitoring and search and rescue. Without prior information of the environment, achieving resolution-com...Show More

Abstract:

Online coverage planning can be useful in applications like field monitoring and search and rescue. Without prior information of the environment, achieving resolution-complete coverage considering the non-holonomic mobility constraints in commonly-used vehicles (e.g., wheeled robots) remains a challenge. In this letter, we propose a hierarchical, hex-decomposition-based coverage planning algorithm for unknown, obstacle-cluttered environments. The proposed approach ensures resolution-complete coverage, can be tuned to achieve fast exploration, and plans smooth paths for Dubins vehicles to follow at constant velocity in real-time. Gazebo simulations and hardware experiments with a non-holonomic wheeled robot show that our approach can successfully tradeoff between coverage and exploration speed and can outperform existing online coverage algorithms in terms of total covered area or exploration speed according to how it is tuned.
Published in: IEEE Robotics and Automation Letters ( Volume: 5, Issue: 4, October 2020)
Page(s): 5969 - 5976
Date of Publication: 20 July 2020

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