Implementation and Application of High-Precision UWB Localization with Sub-Centimeter Accuracy Using a Single Channel
YunSeok Jang, Sumin Han, Byung‐Jun Jang · The Journal of Korean Institute of Electromagnetic Engineering and Science · 2025
In two-way ranging using ultra-wideband (UWB) technology, distance-measurement errors on the order of several centimeters is observed owing to phase errors between the transmitter and receiver, which are often spatially separated. These errors result in significant challenges for UWB applications, such as gaming and AR/VR, which require a high precision of less than 1 cm. Recent studies have proposed improving ranging accuracy by eliminating the common phase offset in exchanged packets. However, this approach encountered limitations when employing two frequency channels. The present study investigates the feasibility of achieving high-precision UWB of less than 1 cm utilizing a single channel, with the common phase removed via appropriate filtering to mitigate random ranging errors. Implementation with the DW3000 UWB module demonstrated that the precision of distance measurements was within approximately 1 cm. Additionally, its applicability was validated via development of a real-time game using four UWB modules.