%0 Journal Article %T An improved particle filter for sparse environments %A Prestes %A Edson %A Ritt %A Marcus %A F¨¹hr %A Gustavo %J Journal of the Brazilian Computer Society %D 2009 %I Springer %R 10.1007/BF03194506 %X in this paper, we combine a path planner based on boundary value problems (bvp) and monte carlo localization (mcl) to solve the wake-up robot problem in a sparse environment. this problem is difficult since large regions of sparse environments do not provide relevant information for the robot to recover its pose. we propose a novel method that distributes particle poses only in relevant parts of the environment and leads the robot along these regions using the numeric solution of a bvp. several experiments show that the improved method leads to a better initial particle distribution and a better convergence of the localization process. %K boundary value problems %K autonomous navigation %K environment exploration %K global localization %K monte carlo localization. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0104-65002009000300006&lng=en&nrm=iso&tlng=en