NDLI: Noncontact Respiration Monitoring During Sleep With Microwave Doppler Radar

Content Provider	IEEE Xplore Digital Library
Author	Zakrzewski, M. Vehkaoja, A. Joutsen, A.S. Palovuori, K.T. Vanhala, J.J.
Copyright Year	2001
Abstract	This paper demonstrates the measurement of respiration waveform during sleep with a noncontact radar sensor. Instead of measuring only the respiration rate, the methods that allow monitoring the absolute respiration displacement were studied. Absolute respiration displacement can in theory be measured with a quadrature microwave Doppler radar sensor and using the nonlinear demodulation as the channel combining method. However, in this paper, relative respiration displacement measures were used as a reference. This is the first time that longer data sets have been analyzed successfully with the nonlinear demodulation method. This paper consists of whole-night recordings of three patients in an uncontrolled environment. The reference respiration data were obtained from a full polysomnography recorded simultaneously. The feasibility of the nonlinear demodulation in a real-life setting has been unclear. However, this paper shows that it is successful most of the time. The coverage of successfully demodulated radar data was ~58%-78%. The use of the nonlinear demodulation is not possible in the following cases: 1) if the chest wall displacement is too small compared with the wavelength of the radar; 2) if the radar data do not form an arc-like shape in the I Q-plot; or 3) if there are large movement artifacts present in the data. Both in academic literature and in commercial radar devices, the data are processed based on the presumption that it forms either an arc or a line in the I Q-plot. Our measurements show that the presumption is not always valid.
Sponsorship	IEEE Sensors Council
Starting Page	5683
Ending Page	5693
Page Count	11
File Size	3509309
File Format	PDF
ISSN	1530437X
Volume Number	15
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar Sensors Sleep apnea Demodulation Monitoring Displacement measurement non-contact respiration measurement Doppler radar breathing patterns radar measurements
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Comparison of Center Estimation Algorithms for Heart and Respiration Monitoring With Microwave Doppler Radar

Noncontact Large-Scale Displacement Tracking: Doppler Radar for Water Level Gauging

A Review on Recent Advances in Doppler Radar Sensors for Noncontact Healthcare Monitoring

Tidal Volume Measurement Through Non-Contact Doppler Radar With DC Reconstruction

Random Body Movement Cancellation in Doppler Radar Vital Sign Detection

From Tumor Targeting to Speech Monitoring: Accurate Respiratory Monitoring Using Medical Continuous-Wave Radar Sensors

Radar and Thermal for Remote Sleep Monitoring of Breathing and Apnea

Instrument-Based Noncontact Doppler Radar Vital Sign Detection System Using Heterodyne Digital Quadrature Demodulation Architecture

Novel Methods for Noncontact Heart Rate Measurement: A Feasibility Study

Noncontact Respiration Monitoring During Sleep With Microwave Doppler Radar

Similar Documents

Comparison of Center Estimation Algorithms for Heart and Respiration Monitoring With Microwave Doppler Radar

Noncontact Large-Scale Displacement Tracking: Doppler Radar for Water Level Gauging

A Review on Recent Advances in Doppler Radar Sensors for Noncontact Healthcare Monitoring

Tidal Volume Measurement Through Non-Contact Doppler Radar With DC Reconstruction

Random Body Movement Cancellation in Doppler Radar Vital Sign Detection

From Tumor Targeting to Speech Monitoring: Accurate Respiratory Monitoring Using Medical Continuous-Wave Radar Sensors

Radar and Thermal for Remote Sleep Monitoring of Breathing and Apnea

Instrument-Based Noncontact Doppler Radar Vital Sign Detection System Using Heterodyne Digital Quadrature Demodulation Architecture

Novel Methods for Noncontact Heart Rate Measurement: A Feasibility Study

Noncontact Respiration Monitoring During Sleep With Microwave Doppler Radar