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Air and ground robot collaborate to map and safely navigate unknown, changing terrain

October 5, 2015

ASL_aerial_ground_robot_collaboration_ETHZThis video shows how a robot team can work together to map and navigate toward a goal in an unknown terrain that may change over time. Using an onboard monocular camera, a flying robot first scouts the area, creating both a map of visual features for simultaneous localization and a dense elevation map of the environment. A legged ground robot then localizes itself against the global map, and uses the elevation map to plan a traversable path to a goal.

While following the planned path, the absolute pose corrections are fused with the legged robot’s state estimation and the elevation map is continuously updated with distance measurements from an onboard laser range sensor. This allows the legged robot to safely navigate towards its goal while taking into account any changes in the environment.

More info: http://leggedrobotics.ethz.ch

This work was published as:
P. Fankhauser, M. Bloesch, P. Krüsi, R. Diethelm, M. Wermelinger, T. Schneider, M. Dymczyk, M. Hutter, and R. Siegwart, “Collaborative Navigation for Flying and Walking Robots,” in IEEE International Conference on Intelligent Robots and Systems (IROS), 2016.

Autonomous Systems Lab at ETH Zurich creates robots and intelligent systems that are able to autonomously operate in complex and diverse environments.. read more

Péter Fankhauser is a PhD student at ETH Zurich in robotics and co-founder of ANYbotics..... read more


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