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Probabilistic Terrain Mapping for Mobile Robots With Uncertain Localization

Publication date:

Authors:

 

Published in: IEEE Robotics and Automation Letters, 3, 4, 3019-3026

Mobile robots build on accurate, real-time mapping with onboard range sensors to achieve autonomous navigation over rough terrain. Existing approaches often rely on absolute localization based on tracking of external geometric or visual features. To circumvent the reliability issues of these approaches, we propose a novel terrain mapping method, which bases on proprioceptive localization from kinematic and inertial measurements only. The proposed method incorporates the drift and uncertainties of the state estimation and a noise model of the distance sensor. It yields a probabilistic terrain estimate as a grid-based elevation map including upper and lower confidence bounds. We demonstrate the effectiveness of our approach with simulated datasets and real-world experiments for real-time terrain mapping with legged robots and compare the terrain reconstruction to ground truth reference maps.

Reference

  • Detailed record: infoscience.epfl.ch/record/257025
  • DOI: 10.1109/LRA.2018.2849506
  • Date: Jun 21, 2018
Reference
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