@article{e07b695763e941cfa10e5e516e255044,
title = "Noncontact Measurement of the Instantaneous Heart Rate in a Multi-Person Scenario Using X -Band Array Radar and Adaptive Array Processing",
abstract = "A noncontact measurement of the heart rate of a specific person using an X -band radar system with a four-element antenna array is presented. The system comprises a 2-D planar wide-beam antenna array with a four-channel network analyzer. The direction of arrival is estimated using the Capon method, and the directionally constrained minimization-of-power algorithm is then applied to the received signals. Signals from the four channels are adaptively combined to enhance the accuracy in estimating the instantaneous heart rate in a multi-person scenario. Measurement results indicate that the proposed system with the adaptive array processing technique is effective for the noncontact measurement of the heart rate of a specific person when there is more than one person in the scene.",
keywords = "Adaptive array, heart rate, microwave, radar",
author = "Takuya Sakamoto and Aubry, {Pascal J.} and Shigeaki Okumura and Hirofumi Taki and Toru Sato and Yarovoy, {Alexander G.}",
note = "Funding Information: Manuscript received September 13, 2017; revised December 10, 2017 and January 20, 2018; accepted February 20, 2018. Date of publication February 27, 2018; date of current version June 11, 2018. This work was supported in part by the Kyoto University SPIRITS Project, in part by the Center of Innovation Program, and in part by JSPS KAKENHI under Grant 25249057, Grant 15K18077, Grant 15KK0243, and Grant 15J05687. This paper was recommended by Guest Editor C. Li. (Corresponding author: Takuya Sakamoto.) T. Sakamoto is with the Department of Electrical Engineering, University of Hawaii at Manoa, Honolulu, HI 96822 USA, also with the Graduate School of Engineering, University of Hyogo, Himeji 671-2280, Japan, and also with the Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan (e-mail: t-sakamo@i.kyoto-u.ac.jp). Publisher Copyright: {\textcopyright} 2011 IEEE.",
year = "2018",
month = jun,
doi = "10.1109/JETCAS.2018.2809582",
language = "English",
volume = "8",
pages = "280--293",
journal = "IEEE Journal on Emerging and Selected Topics in Circuits and Systems",
issn = "2156-3357",
publisher = "IEEE Circuits and Systems Society",
number = "2",
}