Results 251 to 260 of about 707,332 (306)
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IEEE Transactions on Aerospace and Navigational Electronics, 1964
Computation of the entire clutter spectrum for Doppler radar has been reduced to a few simple formulas, by integration of reflected energy between constant Doppler loci, using the fourth power range law. The results are widely applicable, and have been found in agreement with both flight tests and a computer program study.
J. L. Farrell, R. L. Taylor
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Computation of the entire clutter spectrum for Doppler radar has been reduced to a few simple formulas, by integration of reflected energy between constant Doppler loci, using the fourth power range law. The results are widely applicable, and have been found in agreement with both flight tests and a computer program study.
J. L. Farrell, R. L. Taylor
openaire +2 more sources
A Noncontact Breathing Disorder Recognition System Using 2.4-GHz Digital-IF Doppler Radar
IEEE journal of biomedical and health informatics, 2019In this paper, a noncontact breathing disorder recognition system has been proposed for identifying irregular breathing patterns. The proposed system consists of a Doppler radar-based sensor module and a machine-learning-based breathing disorder ...
Heng Zhao +7 more
semanticscholar +1 more source
IEEE transactions on microwave theory and techniques, 2018
The fast detection of heart rate (HR) is challenging when using the noncontact continuous-wave (CW) Doppler radar. Applying the Fourier transform (FT) to the baseband signal analysis, the accuracy is degraded due to the insufficient frequency resolution ...
Meiyu Li, Jenshan Lin
semanticscholar +1 more source
The fast detection of heart rate (HR) is challenging when using the noncontact continuous-wave (CW) Doppler radar. Applying the Fourier transform (FT) to the baseband signal analysis, the accuracy is degraded due to the insufficient frequency resolution ...
Meiyu Li, Jenshan Lin
semanticscholar +1 more source
Doppler Radar: The Joint Doppler Operational Project
Weatherwise, 1979(1979). Doppler Radar: The Joint Doppler Operational Project. Weatherwise: Vol. 32, No. 2, pp. 72-75.
Joel D. Bonewitz +5 more
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Miniaturized Circularly Polarized Doppler Radar for Human Vital Sign Detection
IEEE Transactions on Antennas and Propagation, 2019In this paper, a miniaturized circularly polarized (CP) continuous wave Doppler radar system operating at 2.4 GHz is presented. The radar front end consists of one left-handed CP (LHCP) antenna and one right-handed CP (RHCP) antenna, which share a single
Yuchu He +4 more
semanticscholar +1 more source
IEEE Transactions on Biomedical Circuits and Systems, 2018
A continuous wave Doppler radar, operating as a phase-locked-loop in phase demodulator configuration, is proposed and in vivo demonstrated for noncontact vital signs monitoring.
M. Mercuri +6 more
semanticscholar +1 more source
A continuous wave Doppler radar, operating as a phase-locked-loop in phase demodulator configuration, is proposed and in vivo demonstrated for noncontact vital signs monitoring.
M. Mercuri +6 more
semanticscholar +1 more source
Drone detection and tracking based on phase-interferometric Doppler radar
International Radar Conference, 2018In this paper, drone detection and tracking based on phase-interferometry are investigated. Data collected by a simple dual-channel Doppler radar is used for implementing the joint range-Doppler-azimuth processing.
Michael Jian, Zhenzhong Lu, V. Chen
semanticscholar +1 more source
Noncontact Sleep Stage Estimation Using a CW Doppler Radar
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2018Sleep stage estimation is crucial to the evaluation of sleep quality and is a proven biometric in diagnosing cardiovascular diseases. In this paper, we design a continuous wave (CW) Doppler radar to accurately measure sleep-related signals, including ...
Hong Hong +5 more
semanticscholar +1 more source
Detection of Gait Asymmetry Using Indoor Doppler Radar
International Radar Conference, 2019Doppler radar systems enable unobtrusive and privacy-preserving long-term monitoring of human motions indoors. In particular, a person's gait can provide important information about their state of health.
Ann-Kathrin Seifert, A. Zoubir, M. Amin
semanticscholar +1 more source
Proceedings of the IEEE, 1984
The idea of combining the clinical procedure known as Reconstruction Tomography, and the radar processing for linear FM pulse compression, in order to map radar backscatter energy, is explained. A possible configuration is described.
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The idea of combining the clinical procedure known as Reconstruction Tomography, and the radar processing for linear FM pulse compression, in order to map radar backscatter energy, is explained. A possible configuration is described.
openaire +2 more sources