nhờ các bác down giúp em bài báo này.
Sonar-based real-world mapping and navigation
Elfes, A.
Robotics and Automation, IEEE Journal of
Volume 3, Issue 3, June 1987 Page(s):249 - 265
Digital Object Identifier 10.1109/JRA.1987.1087096
http://ieeexplore.ieee.org/Xplore/lo...096.pdf?temp=x
em xin cảm ơn nhiều.