TY - GEN
T1 - Doppler radar noncontact imaging of human cardiac motion
AU - Li, Changzhi
AU - Zhu, Anjie
AU - Qiao, Shan
AU - Sun, Yongzhi
AU - Ran, Lixin
N1 - Publisher Copyright:
Copyright 2014 IEICE.
PY - 2014/3/25
Y1 - 2014/3/25
N2 - This paper reports recent investigation on the possibility of human cardiac motion imaging using a continuous-wave microwave Doppler radar sensor. Compared with existing works of vital sign radar sensors that mainly focused on the heartbeat rate, the challenge is detect the actual pattern of cardiac motion. To achieve this, a DC-coupled direct conversion architecture and a digital-IF architecture can be used because both of them can avoid frequency-dependent signal distortion. A digital-IF Doppler radar sensor employing an extended differentiate and cross-multiply (DACM) algorithm was adopted to perform a series of experiments that investigate the effectiveness of noncontact cardiac imaging from different orientations of a subject. Experimental results demonstrated that in addition to detecting heartbeat rate, Doppler radar could also image one-dimensional, time domain cardiac motion that fits well with the known physiological description.
AB - This paper reports recent investigation on the possibility of human cardiac motion imaging using a continuous-wave microwave Doppler radar sensor. Compared with existing works of vital sign radar sensors that mainly focused on the heartbeat rate, the challenge is detect the actual pattern of cardiac motion. To achieve this, a DC-coupled direct conversion architecture and a digital-IF architecture can be used because both of them can avoid frequency-dependent signal distortion. A digital-IF Doppler radar sensor employing an extended differentiate and cross-multiply (DACM) algorithm was adopted to perform a series of experiments that investigate the effectiveness of noncontact cardiac imaging from different orientations of a subject. Experimental results demonstrated that in addition to detecting heartbeat rate, Doppler radar could also image one-dimensional, time domain cardiac motion that fits well with the known physiological description.
KW - Cardiac motion imaging
KW - DC-coupled
KW - Digital-IF
KW - Doppler radar sensor
KW - Extended DACM
UR - http://www.scopus.com/inward/record.url?scp=84988269533&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84988269533
T3 - 2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014
SP - 941
EP - 943
BT - 2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 Asia-Pacific Microwave Conference, APMC 2014
Y2 - 4 November 2014 through 7 November 2014
ER -