Improved UWB TDoA-Based Positioning Using a Single Hotspot for Industrial IoT Applications

The goal of this article is to investigate ultra wideband localization with time difference arrival processing at the anchors. We consider scenarios where anchors are placed very close each other and target be localized around group All target–anchor communications assumed in line-of-sight. Since our analysis shows that symmetries anchors’ placement, respect position, degrade positioning accuracy standard algorithms, we propose use a subset selection strategy, position estimates obtained properly selected subsets asymmetric fused together get final output. Our results show improved all anchors, especially estimating angle arrival. Finally, analyze impact an inaccurate synchronization among deriving guidelines for hardware implementation.