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The accuracy of ranging of commercially available ultra-wide-band radio module was evaluated. Such modules are capable of very precise measurements of Time of Arrival of RF signal and consequently very precise range measurements or localizations. We measured and compared the distances with the reference distance using one of these commercial modules. The results were very promising for indoor localization because the modules achieved ranging accuracy below 10 cm.
Malajner et al. (Tue,) studied this question.