Vital Signs Detection by a 24 GHz Radar Sensor Operating in Linear/Circular Polarization in the Presence of Environmental Clutter
Open Access
Abstract
A 24 GHz radar, useful for remote vital signs monitoring, operating in linear/circular polarization (LP/CP), was developed to analyze vital signs detection performance in the presence of environmental clutter. The radar system, equipped with horn antennas with and without suitable LP-CP field polarization converters, is designed for monitoring respiratory and cardiac activity in domestic and hospital environments. A geometric optics (GO) model is introduced to show the advantages of circularly polarized (CP) radar sensors over linearly polarized (LP) ones in discriminating vital signals in scenarios where vibrating metallic panels simulate environmental disturbance (worst case). An analytical model, numerical computations, and experimental investigations highlighted the robustness of CP radar sensors in detecting vital signs in the presence of environmental clutter.Keywords
Funding Information
- European Union—NextGenerationEU (B53C22006120001)
This publication has 36 references indexed in Scilit:
- A lightweight model for indoor object detection in unstructured scenes based on joint attention and prior knowledge in the context of home rehabilitationJournal of King Saud University Computer and Information Sciences, 2026
- Human-computer interactive rehabilitation: A 3D graph deep learning method for non-contact gesture recognition in post-epidemic and aging societiesMeasurement, 2025
- A Deterministic Method for Contactless Monitoring of Vital Signs Using Multiple FMCW Radars in the 24 GHz BandIEEE Access, 2025
- Gapwaveguide Automotive Imaging Radar Antenna With Launcher in Package TechnologyIEEE Access, 2023
- Influence of 3D printing properties on relative dielectric constant in PLA and ABS materialsProgress in Additive Manufacturing, 2023
- Enhancement of Remote Vital Sign Monitoring Detection Accuracy Using Multiple-Input Multiple-Output 77 GHz FMCW RadarIEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology, 2021
- A dataset of radar-recorded heart sounds and vital signs including synchronised reference sensor signalsScientific Data, 2020
- A Broader Look: Camera-Based Vital Sign Estimation across the SpectrumYearbook of Medical Informatics, 2019
- Interior-point methodsJournal of Computational and Applied Mathematics, 2000
- STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENTThe Lancet, 1986