Print Email Facebook Twitter Enabling Robust Radar-based Localization and Vital Signs Monitoring in Multipath Propagation Environments Title Enabling Robust Radar-based Localization and Vital Signs Monitoring in Multipath Propagation Environments Author Mercuri, Marco (Stichting IMEC Nederland) Lu, Yiting (Stichting IMEC Nederland) Polito, Salvatore (Stichting IMEC Nederland) Wieringa, Fokko (Stichting IMEC Nederland; Universiteit Maastricht) van der Veen, A.J. (TU Delft Signal Processing Systems) Van Hoof, Chris (IMEC; Katholieke Universiteit Leuven) Torfs, Tom (IMEC) Date 2021 Abstract Objective: Over the last two decades, radar-based contactless monitoring of vital signs (heartbeat and respiration rate) has raised increasing interest as an emerging and added value to health care. However, until now, the flaws caused by indoor multipath propagation formed a fundamental hurdle for the adoption of such technology in practical healthcare applications where reliability and robustness are crucial. Multipath reflections, originated from one person, combine with the direct signals and multipaths of other people and stationary objects, thus jeopardizing individual vital signs extraction and localization. This work focuses on tackling indoor multipath propagation. Methods: We describe a methodology, based on accurate models of the indoor multipaths and of the radar signals, that enables separating the undesired multipaths from desired signals of multiple individuals, removing a key obstacle to real-world contactless vital signs monitoring and localization. Results: We also demonstrated it by accurately measure individual heart rates, respiration rates, and absolute distances (range information) of paired volunteers in a challenging real-world office setting. Conclusion: The approach, validated using a frequency-modulated continuous wave (FMCW) radar, was shown to function in an indoor environment where radar signals are severely affected by multipath reflections. Significance: Practical applications arise for health care, assisted living, geriatric and quarantine medicine, rescue and security purposes. Subject Array signal modelbiomedical applicationscontactlessDopplerfrequency-modulated continuous wavelocalizationmultipathremote radar sensingsingle-input and single-output radarvital signs monitoring To reference this document use: http://resolver.tudelft.nl/uuid:1cec9faa-e673-41c8-96ef-5d376657123f DOI https://doi.org/10.1109/TBME.2021.3066876 Embargo date 2022-04-04 ISSN 0018-9294 Source IEEE Transactions on Biomedical Engineering, 68 (11), 3228 - 3240 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2021 Marco Mercuri, Yiting Lu, Salvatore Polito, Fokko Wieringa, A.J. van der Veen, Chris Van Hoof, Tom Torfs Files PDF Enabling_Robust_Radar_bas ... nments.pdf 1.83 MB PDF Enabling_Robust_Radar_Bas ... nments.pdf 2.49 MB Close viewer /islandora/object/uuid:1cec9faa-e673-41c8-96ef-5d376657123f/datastream/OBJ1/view