Angle of Arrival and Centimeter Distance Estimation on a Smart UWB Sensor Node
Abstract
Accurate and low-power indoor localization is becoming more and more of a necessity to empower novel consumer and industrial applications. In this field, the most promising technology is based on UWB modulation; however, current UWB positioning systems do not reach centimeter accuracy in general deployments due to multipath and nonisotropic antennas, still necessitating several fixed anchors to estimate an object's position in space. This article presents an in-depth study and assessment of angle of arrival (AoA) UWB measurements using a compact, low-power solution integrating a novel commercial module with phase difference of arrival (PDoA) estimation as integrated feature. Results demonstrate the possibility of reaching centimeter distance precision and ang 2.4 average angular accuracy in many operative conditions, e.g., in a ang 90 range around the center. Moreover, integrating the channel impulse response, the phase differential of arrival, and the point-to-point distance, an error correction model is discussed to compensate for reflections, multipaths, and front-back ambiguity.
Keywords
Cite
@article{arxiv.2312.13672,
title = {Angle of Arrival and Centimeter Distance Estimation on a Smart UWB Sensor Node},
author = {Tobias Margiani and Silvano Cortesi and Milena Keller and Christian Vogt and Tommaso Polonelli and Michele Magno},
journal= {arXiv preprint arXiv:2312.13672},
year = {2023}
}
Comments
This article has been accepted for publication in the IEEE Transactions on Instrumentation and Measurement journal. DOI: https://doi.org/10.1109/TIM.2023.3282289