System Design and Performance Analysis of Indoor Real-time Localization using UWB Infrastructure

Abstract

Indoor localization and tracking poses a uniquely challenging aspect for asset tracking. Unreliability of traditional positioning systems, such as GNSS, in indoor applications calls for specialized systems to attain similar levels of accuracy and precision. To this end, Real Time Location System (RTLS) based on deployable anchors and tags are typically employed for these applications. The precision and accuracy of such RTLS systems is limited by the chosen anchors and tags. In this paper, the performance of DecaWave’s Ultra-wide-band (UWB) MDEK1001 is evaluated and tested under ideal Line-of-Sight (LOS) and non-LOS (NLOS) scenarios. The effect of obstacles and anchor bias on accuracy is also evaluated. Different anchor deployment configurations are tested to determine the impact of anchor quantity and position on tag position accuracy. Additionally, this paper provides an overview of EMSLab-RTLS client-server generated for real-time location applications.