We introduce our mobile robot "Hitotsubo" in the Tsukuba Challenge 2011(TC 2011). We propose an approach for moving on narrow slope at the vicinity of the goal point of TC 2011. In this slope, there is a problem that our robot could not estimate position with enough accuracy. Therefore, we implemented a strategy for our robot to detect possible area to move. The strategy talus information from laser scanner and digital video camera into account for the possible area detection. This paper describes this sensing approach, navigation algorithm and experimental results.
