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Updated: Aug 23, 2025

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Radar-based remote physiological sensing: Progress, challenges, and opportunities.

Shekh Md Mahmudul Islam1

  • 1Department of Electrical and Electronic Engineering, University of Dhaka, Dhaka, Bangladesh.

Frontiers in Physiology
|October 28, 2022
PubMed
Summary
This summary is machine-generated.

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Microwave Doppler radar enables non-contact monitoring of vital signs like respiration and heart rate. This technology offers significant potential for remote healthcare applications, including sleep apnea and COVID-19 patient monitoring.

Area of Science:

  • Biomedical Engineering
  • Medical Physics
  • Health Informatics

Background:

  • Non-contact physiological sensing is crucial for unobtrusive health monitoring.
  • Microwave Doppler radar technology has advanced significantly for respiration sensing.
  • Applications include sleep apnea, SIDS, burn victims, and COVID-19 patient monitoring.

Purpose of the Study:

  • To provide a perspective on recent advances in Doppler radar for biomedical and healthcare applications.
  • To highlight the capabilities of Doppler radar in extracting vital signs from chest movements.
  • To outline challenges, opportunities, and future research directions for remote physiological sensing.

Main Methods:

  • Utilizing microwave Doppler radar to detect subtle chest surface movements.
Keywords:
Min.5-Max. 8biomedical radar sensorbreathing rate (BR)heart ratenon-contact sensingphysiological sensing

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  • Extracting vital signs such as respiration rate and heart rate variability (HRV).
  • Analyzing radar signals to derive physiological parameters like tidal volume.

    • Main Results:

    • Doppler radar can accurately detect and extract multiple vital signs non-intrusively.
    • Demonstrated effectiveness in various healthcare scenarios requiring remote monitoring.
    • Identified key parameters like tidal volume and HRV can be derived.

    Conclusions:

    • Microwave Doppler radar is a promising technology for advanced, contactless physiological monitoring.
    • Further research can expand its deployment in daily life and clinical settings.
    • Addressing challenges will enhance the integration of this remote sensing technology into healthcare.