Abstract
Path planning is a key technique to realise autonomous navigation of farm machines. Based on MapObjects, a Geographic Information System (GIS) for autonomous navigation was developed with Visual C++. A path search algorithm used to guide machines to track the desired path was designed. A Global Positioning System (GPS) was adopted in this algorithm to determine the current position of the machine. A path preview algorithm was designed to estimate the future position for the machine. On the basis of this system, dynamic tracking and display of the position was realised and the optimal path was provided through path planning.
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