Abstract
The positioning problem of mobile robot is an important part of control problem for mobile robot. Dead Reckoning is widely used for positioning of mobile robot. However this method has problems because it accumulates estimation errors. In this paper, we propose a new method to increase the accuracy of estimated position using the U-SAT (Ultrasonic Satellite system). U-SAT is composed of a distance measurement using ultrasonic wave and the position acquisition in the world coordinate using the GPS. It is shown that we will be able to estimate the position of mobile robot precisely, in which errors are not accumulated. The experimental results show that the proposed method is enable to estimate the position of the mobile robot.
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