8 citations · 12 across the 6 of their papers we have counts for
6 papers
A Nonlinear Spectral Approach for Radar-Based Heartbeat Estimation via Autocorrelation of Higher Harmonics
Kohei Shimomura, Chi-Hsuan Lee, Takuya Sakamoto
This study presents a nonlinear signal processing method for accurate radar-based heartbeat interval estimation by exploiting the periodicity of higher-order harmonics inherent in…
Radar-based Measurement of the Body Movements of Multiple Students in Classroom Environments
Yu Oshima, Tianyi Wang, Masaya Kato +9
We demonstrate the feasibility of the radar-based measurement of body movements in scenarios involving multiple students using a pair of 79-GHz millimeter-wave radar systems with a…
Individual Identification Using Radar-Measured Respiratory and Heartbeat Features
Haruto Kobayashi, Yuji Tanaka, Takuya Sakamoto
This study proposes a method for radar-based identification of individuals using a combination of their respiratory and heartbeat features. In the proposed method, the target indiv…
Accurate Radar-Based Heartbeat Measurement Using Higher Harmonic Components
Itsuki Iwata, Kimitaka Sumi, Yuji Tanaka +1
This study proposes a radar-based heartbeat measurement method that uses the absolute value of the second derivative of the complex radar signal, rather than its phase, and the var…
Noncontact Detection of Sleep Apnea Using Radar and Expectation-Maximization Algorithm
Takato Koda, Shigeaki Okumura, Hirofumi Taki +5
Sleep apnea syndrome requires early diagnosis because this syndrome can lead to a variety of health problems. If sleep apnea events can be detected in a noncontact manner using rad…
Complex Number Assignment in the Topology Method for Heartbeat Interval Estimation Using Millimeter-Wave Radar
Yuji Tanaka, Kimitaka Sumi, Itsuki Iwata +1
The topology method is an algorithm for accurate estimation of instantaneous heartbeat intervals using millimeter-wave radar signals. In this model, feature points are extracted fr…