A navigation control system on a material transfer vehicle includes a rough approach location system that identifies a rough location of a destination of the material transfer vehicle in order to perform an unloading operation. The rough location is provided to a path planning system which generates a path that the material transfer vehicle follows to the rough location. As the material transfer vehicle approaches the rough location, a set of on-board sensors sense a more precise location of a container that is to receive the material from the material transfer vehicle. The more precise location is provided to the path planning system which modifies the path based upon the more precise location. As the material transfer vehicle comes closer to the container, the precise approach system corrects the precise location of the container and provides the corrected precise location to the path planning system. The path planning system continues to correct the path based upon the additional precise container locations. A navigation system navigates the material transfer vehicle along the path generated by the path planning system.