Simple and efficient localization method for IR-UWB systems based on two-way ranging

This paper describes a localization method for an IR-UWB (Impulse Radio Ultra Wideband) two-way ranging system developed for precise time-of-arrival measurements. The ranging system provides a time resolution of 275 ps, which allows precise indoor distance estimation with the accuracy of 4 cm. In this work, a two-way ranging algorithm has been extended into a localization algorithm without the need to adapt the hardware. The localization algorithm has been implemented in the FPGA and applied to the IR-UWB ranging system. The main advantages of such a localization algorithm is the simple implementation the scalability and the robustness of the communication between multiple devices.