Results 11 to 20 of about 4,499,288 (288)
Atmosphere, 2022 This paper presents a passive bistatic radar (PBR) configuration using a global navigation satellite system as an illuminator of opportunity for the rotor blade feature extraction of a helicopter.
Zibo Zhou +4 more
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On positivity of time-frequency distributions [PDF]
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1985 Consideration is given to the problem of how to regard the fundamental impossibility with time-frequency energy distributions of Cohen's class always to be nonnegative and, at the same time, to have correct marginal distributions. It is shown that the Wigner distribution is the only member of a large class of bilinear time-frequency distributions that ...
Janssen, A.J.E.M., Claasen, T.A.C.M.
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IEEE Access, 2020 This paper investigates the possibility of using visual imagery tasks, which are mental imagery tasks that involve imagining the images of objects perceptually without seeing them, as a control paradigm that can increase the control's dimensionality of ...
Rami Alazrai +4 more
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Time frequency distributions of TMJ sounds [PDF]
Journal of Oral Rehabilitation, 1991 SummaryFor analysis of time‐varying signals such as the TMJ sounds, it is often desirable to know how the frequency components change with time, using methods of time‐frequency analysis. The aim of this study was to compare two of the most familiar methods for energy density representation with a newly developed technique. The sounds were recorded with
Widmalm, Sven-Erik +2 more
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Impulse Feature Extraction of Bearing Faults Based on Convolutive Nonnegative Matrix Factorization
IEEE Access, 2020 The detection of bearing faults is of great significance for the stable operation of rotating machinery. Apart from detection by analysing the vibration response, another powerful strategy is to extract the periodic impulse excitation directly induced by
Lin Liang +5 more
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A New Perspective of Wind Power Grid Codes Under Unbalanced and Distorted Grid Conditions
IEEE Access, 2020 Increasing penetration of wind power has led power system operators worldwide to develop new grid codes for integration of a wind power plant (WPP) onto the grid. According to the grid codes issued by Federal Energy Regulatory Commission (FERC) in the US,
Md Moinul Islam +3 more
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International Clinical Neuroscience Journal, 2022 Background: Psychiatrists diagnose schizophrenia based on clinical symptoms such as disordered thinking, delusions, hallucinations, and severe distortion of daily functions.
Malihe Sabeti +4 more
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Newly discovered brown dwarfs not seen in microlensing time scale frequency distribution? [PDF]
, 1999 The 2-Micron All Sky Survey (2MASS) (Skrutskie et al. 1997) and the DEep Near Infrared Survey of the southern sky (DENIS) (Epchtein et al. 1997) have revealed a heretofore unknown population of free brown dwarfs that has extended the local mass function ...
S. J. Peale, Zhao H. S., Zhao H. S.
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Applied Sciences, 2019 The incipient damages of mechanical equipment excite weak impulse vibration, which is hidden, almost unobservable, in the collected signal, making fault detection and failure prevention at the inchoate stage rather challenging.
Lin Liang +4 more
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A Deep Learning Framework for Decoding Motor Imagery Tasks of the Same Hand Using EEG Signals
IEEE Access, 2019 This study aims to increase the control's dimensions of the electroencephalography (EEG)-based brain-computer interface (BCI) systems by distinguishing between the motor imagery (MI) tasks associated with fine body-parts of the same hand, such as the ...
Rami Alazrai +3 more
doaj +1 more source