Research on navigation system of an autonomous vehicle using RTK-DGPS

This paper describes the development of navigation system for an autonomous ground vehicle at limited area by using RTK-DGPS. Before the autonomous drive, we make map data by using RTK-DGPS that is a reference trajectory for the autonomous vehicle. The navigation system with map data computes the yaw angle of the vehicle by using its present position and next position. And the steering wheel of the vehicle is controlled by using fuzzy logic controller. A prototype of the autonomous vehicle by the navigation method is developed and navigation performance of the system is evaluated. The experimental results show that the navigation system based RTK-DGPS can exactly track the map at the low speed. We expect that this navigation system can be more accurate by augmenting other sensors.