Doppler radar vital sign detection with random body movement cancellation based on adaptive phase compensation

Changzhan Gu, Guochao Wang, Takao Inoue, Changzhi Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Scopus citations

Abstract

This paper presents a Doppler radar sensor system with camera-aided random body movement cancellation (RBMC) techniques for noncontact vital sign detection. The camera measures the subject's random body motion that is provided for the radar system to perform RBMC and extract the uniform vital sign signals of respiration and heartbeat. Three RBMC strategies are proposed: 1) phase compensation at radar RF front-end, 2) phase compensation for baseband complex signals, and 3) movement cancellation for demodulated signals. Both theoretical analysis and radar simulation have been carried out to validate the proposed RBMC techniques. An experiment was carried out to measure a subject person who was breathing normally but randomly moving his body back and forth. The experimental result reveals that the proposed radar system is effective for RBMC.

Original languageEnglish
Title of host publication2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013
DOIs
StatePublished - 2013
Event2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013 - Seattle, WA, United States
Duration: Jun 2 2013Jun 7 2013

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013
CountryUnited States
CitySeattle, WA
Period06/2/1306/7/13

Keywords

  • Camera
  • Phase compensation
  • Radar
  • Random body movement
  • Vital sign

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