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http://dx.doi.org/10.12673/jant.2014.18.2.134

Two Feature Points Based Laser Scanner for Mobile Robot Navigation  

Kim, Joo-Wan (School of Electrical and Electronics Engineering, Chung-Ang University)
Shim, Duk-Sun (School of Electrical and Electronics Engineering, Chung-Ang University)
Publication Information
Journal of Advanced Navigation Technology / v.18, no.2, 2014 , pp. 134-141 More about this Journal
Abstract
Mobile robots use various sensors for navigation such as wheel encoder, vision sensor, sonar, and laser sensors. Dead reckoning is used with wheel encoder, resulting in the accumulation of positioning errors. For that reason wheel encoder can not be used alone. Too much information of vision sensors leads to an increase in the number of features and complexity of perception scheme. Also Sonar sensor is not suitable for positioning because of its poor accuracy. On the other hand, laser sensor provides accurate distance information relatively. In this paper we propose to extract the angular information from the distance information of laser range finder and use the Kalman filter that match the heading and distance of the laser range finder and those of wheel encoder. For laser scanner with one feature point error may increase much when the feature point is variant or jumping to a new feature point. To solve the problem, we propose to use two feature points and show that the positioning error can be reduced much.
Keywords
SLAM; Feature point; Navigation; Kalman filter; Laser range finder;
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