Results 121 to 130 of about 12,262 (174)

Advancing sleep health equity through deep learning on large-scale nocturnal respiratory signals. [PDF]

Nat Commun
Zhuang Z, Xue B, An Q, Chu H, Zhang Y, Chen R, Xu J, Ding N, Cui X, Wang E, Wang M, Xin J, Yang X, Xu Y, Li Y, Fu CH, Zhu X, Peng M, Hong H.   +18 more
europepmc   +1 more source

Precise Mechanical Oscillator Design and Calibration for Characterising Sub-Millimetre Movements in mmWave Radar Systems. [PDF]

Sensors (Basel)
Parralejo F, Álvarez FJ, Paredes JA, Aranda FJ, Aguilera T.   +4 more
europepmc   +1 more source

Terahertz photonic heterodyne spectral analysis with (sub-) kHz resolution and 6.5 THz frequency coverage. [PDF]

Nat Commun
Krause B, Müller S, Puppe T, Liebermeister L, Schwanke G, Deumer M, Kohlhaas R, Wilk R, Vieweg N, Preu S.   +9 more
europepmc   +1 more source

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An Ingenious Heart Rate Estimation Method in Harmonic Background for FMCW Radar

IEEE Transactions on Microwave Theory and Techniques
The practicality of noncontact vital signs monitoring based on frequency-modulated continuous wave (FMCW) radar in fields such as medical care and health services has become increasingly prominent in recent years.
Xuefeng Zhou, Shisheng Guo, Guolong Cui, Meiqiu Jiang, Luyuan Shi   +4 more
semanticscholar   +4 more sources

Effects of Reference Frequency Harmonic Spurs in FMCW Radar Systems

2021 IEEE Radar Conference (RadarConf21), 2021
Harmonic spurs in local oscillators can degrade the performance of millimeter-wave frequency-modulated continuous-wave radar systems that employ a large-ratio frequency multiplier for LO generation. In this paper, we analyze the effect caused by harmonic spurs on system performance.
Jingzhi Zhang, Sherif S. Ahmed, Amin Arbabian   +2 more
openaire   +2 more sources

Compact Low-cost FMCW Harmonic Radar for Short Range Insect Tracking

2020 IEEE International Radar Conference (RADAR), 2020
We present two frequency modulated continuous wave (FMCW) harmonic radar prototypes for application in insect tracking. They respectively operate in the maritime radar allocations of the S-band and X-band. Short-range operation ensures that the modules are compact enough to be used as portable instruments or even mounted onto an unmanned aerial vehicle
Greg Storz, Anastasia Lavrenko
openaire   +2 more sources