Results 1 to 10 of about 4,499,306 (241)
Time-Frequency Distribution of Seismocardiographic Signals: A Comparative Study [PDF]
Bioengineering, 2017 Accurate estimation of seismocardiographic (SCG) signal features can help successful signal characterization and classification in health and disease. This may lead to new methods for diagnosing and monitoring heart function. Time-frequency distributions
Amirtaha Taebi, Hansen A. Mansy
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EEG-Based Emotion Recognition Using Quadratic Time-Frequency Distribution [PDF]
Sensors, 2018 Accurate recognition and understating of human emotions is an essential skill that can improve the collaboration between humans and machines. In this vein, electroencephalogram (EEG)-based emotion recognition is considered an active research field with ...
Rami Alazrai +3 more
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LPI Radar Waveform Recognition Based on Time-Frequency Distribution [PDF]
Sensors, 2016 In this paper, an automatic radar waveform recognition system in a high noise environment is proposed. Signal waveform recognition techniques are widely applied in the field of cognitive radio, spectrum management and radar applications, etc. We devise a
Ming Zhang, Lutao Liu, Ming Diao
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Agile manipulation of the time-frequency distribution of high-speed electromagnetic waves [PDF]
Nature CommunicationsControlling the temporal evolution of an electromagnetic (EM) wave’s frequency components, the so-called time-frequency (TF) distribution, in a versatile and real-time fashion remains very challenging, especially at the high speeds (> GHz regime ...
Xinyi Zhu +4 more
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Sensors, 2021 For early fault detection of a bearing, the localized defect generally brings a complex vibration signal, so it is difficult to detect the periodic transient characteristics from the signal spectrum using conventional bearing fault diagnosis methods ...
Lin Liang +4 more
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Micro-Doppler Effect and Sparse Representation Analysis of Underwater Targets
Sensors, 2023 At present, the micro-Doppler effects of underwater targets is a challenging new research problem. This paper studies the micro-Doppler effect of underwater targets, analyzes the moving characteristics of underwater micro-motion components, establishes ...
Yan Lu, Siwei Kou, Xiaopeng Wang
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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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Estimating the flood frequency distribution at seasonal and annual time scales [PDF]
Hydrology and Earth System Sciences, 2012 We propose an original approach to infer the flood frequency distribution at seasonal and annual time scale. Our purpose is to estimate the peak flow that is expected for an assigned return period <i>T</i>, independently of the season in ...
E. Baratti +5 more
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Optimising Time-Frequency Distributions: A Surface Metrology Approach
Sensors, 2023 Time-frequency signal processing offers a significant advantage over temporal or frequency-only methods, but representations require optimisation for a given signal. Standard practice includes choosing the appropriate time-frequency distribution and fine-
Damir Malnar, Miroslav Vrankic
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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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