UWB Positioning Technology Utilizing SDS-TWR and Overhearing

This paper proposes an efficient UWB positioning system using SDS-TWR(Symmetry Double-Sided Two-Way Ranging) and an overhearing technique to estimate the distance and angle of a tag.By allowing auxiliary anchors to overhear SDS-TWR signals, the system eliminates the need for direct packet exchanges or anchor synchronization, significantly reducing complexity and costs.The proposed method supports both synchronous and asynchronous modes, offering flexibility and ease of deployment.Performance evaluations demonstrate high accuracy in distance and angle estimation with minimal communication overhead.Future work will implement the system in real-world environments to validate its performance in applications such as autonomous vehicles, industrial safety, logistics management and smart construction.