A long-distance positioning system is essential for modern bucket wheel stacker-reclaimers operating in large stockyards. Traditional encoders and local sensors can lose accuracy over long travel distances, especially under rail slip, structural deflection, and harsh dust conditions. In dusty, high-vibration environments, stable long-distance reference points are critical for repeatable control. A robust positioning solution combines GNSS/RTK, laser ranging, LiDAR scanning, and absolute encoders to provide continuous, real-time coordinates for the machine's boom, bucket wheel, and travel axis.

The system calculates the stacker-reclaimer's precise position relative to the stockpile and rail track, enabling automatic stacking and reclaiming, stable pile profiling, and accurate material inventory. The platform also supports stockpile scanning, volume calculation, and automated reclaiming paths. Integrated anti-collision logic protects conveyors, stockyard equipment, and personnel by defining safety zones and slowing or stopping the machine when proximity risks appear. Data is sent to the central control room through industrial wireless or fiber networks, where operators can monitor status, diagnose faults, and optimize material flow.

By reducing manual measurement and positioning errors, the long-distance positioning system improves productivity, lowers maintenance costs, and supports unmanned or semi-automated stockyard operations. With easy integration into PLC and SCADA systems, the solution delivers dependable performance for continuous bulk terminal operations. It is a reliable foundation for intelligent bulk material handling.