• Corpus ID: 6068950

Doppler Radar Architectures and Signal Processing for Heart Rate Extraction

@inproceedings{BoricLubecke2009DopplerRA,
  title={Doppler Radar Architectures and Signal Processing for Heart Rate Extraction},
  author={Olga Boric-Lubecke and Victor M. Lubecke and Isar Mostafanezhad and Byung-Kwon Park and Wansuree Massagram and Branka Jokanovi{\'c}},
  year={2009}
}
In this paper heartbeat interval extraction methods using Doppler radar are reviewed. While single channel CW radar offers simple architecture and signal processing, this method is very sensitive to subject position. Quadrature radio architecture is used to overcome this limitation. The use of linear and non-linear demodulation methods was explored for heartbeat interval extraction, and it was demonstrated that heart rate variability analysis is feasible using quadrature Doppler radar. 

Figures from this paper

An experimental study: The sufficient respiration rate detection technique via continuous wave Doppler radar
TLDR
Due to the fact that the CW Doppler radar offers very high sensitivity towards minor movements, based on this technology, various filtering techniques were introduced and the detection rate was compared to the reference devices to conclude the leading method for the respiration rate detection.
Cyclostationary Approach for Heart and Respiration Rates Monitoring with Body Movement Cancellation Using Radar Doppler System
TLDR
Numerical results show that the vital signs can be extracted as cyclic frequencies, independent of SNR and without any filtering or phase unwrapping.
Detection and analysis of human respiration using microwave Doppler radar
Non-contact detection characteristic of Doppler radar provides an unobtrusive means of respiration detection and monitoring. This avoids additional preparations such as physical sensor attachment or
Comparative analysis of two systems for unobtrusive heart signal acquisition and characterization
In this paper we describe and compared method of heart rate estimation from cardiac signal acquired with EMFIT, FMCW Doppler radar and Finapres based technology, in the same context, and briefly
Methods for Doppler Radar Monitoring of Physiological Signals
TLDR
This dissertation thoroughly explores the signal processing methods for accurate chest wall displacement measurement with a radar sensor and proposes an I/Q imbalance estimation method and a nonlinear demodulation method for a quadrature radar sensor.
Simultaneous Monitoring of Cardiopulmonary Signals Unobtrusively : A Dual Radar based approach
Recent interest in unobtrusive life signs detection has turned heads towards microwave based sensing, especially Doppler radars. Among these, Continuous Wave (CW) radars are preferred for
Noncontact Detection and Analysis of Respiratory Function Using Microwave Doppler Radar
TLDR
The feasibility of using Doppler Radar in measuring the basic respiratory frequencies (via fast Fourier transform) for four different types of breathing scenarios: normal breathing, rapid breathing, slow inhalation-fast exhalation, and fast inhalation of the respiratory function conducted in a laboratory environment is demonstrated.
Monitoring respiratory and cardiac motion in CT using a continuous wave Doppler radar
Poster: "ECR 2013 / C-2055 / Monitoring respiratory and cardiac motion in CT using a continuous wave Doppler radar" by: "F. Pfanner1, T. Allmendinger2, T. Flohr2, M. Kachelries3; 1Erlangen/DE,
A review on RF based intruder detection using CW Doppler radar
In recent years, electromagnetic waves have become the medium of information exchange in free space for various applications ranging from home appliances to industrial products, from research
Monitoring cardiac motion in CT using a continuous wave radar embedded in the patient table.
TLDR
A continuous wave radar operating in the near field of the antennas can be used to determine the heartbeat and the cardiac motion of humans without special patient preparation, and this is a significant improvement.
...
...

References

SHOWING 1-10 OF 36 REFERENCES
Comparison of heart rate estimators for doppler radar monitoring
TLDR
This paper investigates the performance of the proposed algorithm compared to existing heart rate measurement methods, and shows a decisive advantage when data is acquired through use of a Heartbeat Doppler Radar (HDR).
A microwave radio for Doppler radar sensing of vital signs
A microwave radio for Doppler radar sensing of vital signs is described. This radio was developed using custom DCS1800/PCS1900 base station RFICs. It transmits a single tone signal, demodulates the
Single-channel receiver limitations in Doppler radar measurements of periodic motion
Periodic motion, such as that resulting from cardiopulmonary activity can be measured by direct-conversion microwave Doppler radar. In a direct-conversion receiver, motion is measured as phase
Signal Processing Methods for Doppler Radar Heart Rate Monitoring
TLDR
By leveraging recent advances in signal processing and wireless communications technologies, this technique has the potential to transcend mere novelty and make a profound impact on health and welfare in society.
Assessment of Heart Rate Variability and Respiratory Sinus Arrhythmia via Doppler Radar
TLDR
An investigation of heart rate variability (HRV) and respiratory sinus arrhythmia (RSA) indices using data obtained from Doppler radar cardiopulmonary remote sensing achieved high accuracy using a direct-conversion quadrature radar system with linear demodulation method.
Through-wall UWB radar operating within FCC's mask for sensing heart beat and breathing rate
Non-invasive sensing of heart beat and breathing rate using UWB radar within the FCC's mask between 3.1 to 10.6 GHz and operating within -41 dbm/MHz has been developed. Compared to existing radars,
Cancellation of unwanted motion in a handheld Doppler radar used for non-contact life sign monitoring
Human life signs can be monitored at a distance using mono-static Doppler radars operating in the CW mode. Such systems rely on phase modulation of the radar’s reflected signal due to physiological
Arctangent Demodulation With DC Offset Compensation in Quadrature Doppler Radar Receiver Systems
Direct-conversion microwave Doppler radar can be used to detect cardiopulmonary activity at a distance. One challenge for such detection in single channel receivers is demodulation sensitivity to
Low-cost differential front-end for Doppler radar vital sign monitoring
  • R. Fletcher, Jing Han
  • Computer Science
    2009 IEEE MTT-S International Microwave Symposium Digest
  • 2009
We present a differential front end design for improving the performance of short-range low-cost Doppler radars for vital sign detection with application to automotive driver safety systems, health
Microwave Apexcardiography
TLDR
Results show that microwave technique is useful for delineating the fine structures in the precordial movement in apexcardiograms.
...
...