Results 21 to 30 of about 35,772 (256)
Multitab digital instantaneous frequency measurement receiver
2017 25th Signal Processing and Communications Applications Conference (SIU), 2017 This paper proposes an instantaneous frequency measurement (IFM) receiver structure for electronic support measure (ESM) systems. The performance of instantaneous frequency (IF) measurement improves as the IFM receiver delay increases. However, it is observed that the increasing delay introduces ambiguity to the IF measurement In order to resolve the ...
Seckin Ami Yildinm +3 more
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Nature Communications, 2016 Photonic-based instantaneous frequency measurement systems are usually bulky or require high optical power. Here, Burla et al. demonstrate an integrated measurement system that can identify frequency-varying signals in a dynamic fashion, without the need
Maurizio Burla +4 more
doaj +1 more source
Roll angular rate extraction based on modified spline-kernelled chirplet transform
Defence Technology, 2022 The roll angular rate is much crucial for the guidance and control of the projectile. Yet the high-speed rotation of the projectile brings severe challenges to the direct measurement of the roll angular rate.
Hui Zhao +4 more
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IEEE Photonics Journal, 2022 Photonics-assisted microwave instantaneous frequency measurement (IFM) is considered as a promising technique for detecting an unknown radio-frequency (RF) signal, which has advantages of broad frequency measurement range and fast processing speed. Up to
Xin Wang +4 more
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Measurement: Sensors, 2023 The basic concepts and methods of joint time-frequency distributions are discussed. The primary purpose is to demonstrate how a signal's spectral composition alters over time as well as to modify the underlying physical and mathematical concepts of a ...
Shaik Mohammed Shareef +1 more
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"Body-In-The-Loop": Optimizing Device Parameters Using Measures of Instantaneous Energetic Cost. [PDF]
PLoS ONE, 2015 This paper demonstrates methods for the online optimization of assistive robotic devices such as powered prostheses, orthoses and exoskeletons. Our algorithms estimate the value of a physiological objective in real-time (with a body "in-the-loop") and ...
Wyatt Felt +3 more
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МІНІМІЗАЦІЯ ВИПАДКОВОЇ ПОХИБКИ ЦИФРОВОГО МЕТОДУ ВИМІРЮВАННЯ АМПЛІТУДИ СИНУСОЇДАЛЬНОГО СИГНАЛУ
Праці Інституту електродинаміки Національної академії наук України, 2022 The errors of measuring the amplitude of sinusoidal signals by the method based on calculating the sum of the ratios of digital samples of instantaneous signal values to the sines of the phase angles corresponding to the sampling moments are investigated.
П.І.Борщов
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak +4 more
wiley +1 more source
Remote Sensing, 2021 Frequency modulation continuous wave (FMCW) Lidar inevitably suffers from vibration and nonlinear frequency modulation, which influences the ranging and imaging results.
Rongrong Wang +5 more
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Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif +17 more
wiley +1 more source