Vital-signal sensor using differential phase Doppler radar = 차동위상 도플러 레이더를 이용한 생체신호 검출 센서

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A differential phase Doppler radar sensor with multiple receivers to remotely detect human vital signals is proposed, which can reduce common-motion artifacts as well as common noises to receivers. This is achieved by differentiating two phase signals from a pair of collocated receivers. Random motions are decomposed into several kinds of motions with respect to the transmitted beam direction. Six differential phase signals are obtained from the four receiver combinations, among which at least one pair can get vital signals with reduced common motion artifacts. A weighted-sum method is proposed to combine six differential signals effectively, which allows vital signals to be clearly detected even with large random body motions. A sensor is implemented with a commercially available 24-GHz radar front-end chip with one transmitter (TX) and four receivers (RXs) to verify the differential phase radar concept. An experiment demonstrates that body motion noises are reduced by over 20 dB with the proposed differential phase radar with multiple receivers.
Advisors
Hong, songcheolresearcher홍성철researcher
Description
한국과학기술원 :전기및전자공학부,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2019.2,[1책 :]

Keywords

Differential phase▼adoppler radar▼arandom body movement▼avital signal detection▼aheartbeat sensor; 차동위상▼a도플러 레이더▼a신체 움직임▼a생체신호 검출▼a심박센서

URI
http://hdl.handle.net/10203/266990
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843432&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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