Differential Phase Doppler Radar With Collocated Multiple Receivers for Noncontact Vital Signal Detection

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 46
  • Download : 0
A differential phase Doppler radar sensor with multiple receivers (RXs) to remotely detect human vital signals is proposed, which can reduce common motion artifacts as well as common noises to RXs. This is achieved by differentiating two-phase signals from a pair of collocated RXs. 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 RX 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 and four 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 RXs.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-03
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, v.67, no.3, pp.1233 - 1243

ISSN
0018-9480
DOI
10.1109/TMTT.2018.2884406
URI
http://hdl.handle.net/10203/253996
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0