Results 1 to 10 of about 50,140 (162)

Filter based phase distortions in extracellular spikes. [PDF]

PLoS ONE, 2017
Extracellular recordings are the primary tool for extracting neuronal spike trains in-vivo. One of the crucial pre-processing stages of this signal is the high-pass filtration used to isolate neuronal spiking activity.
Dorin Yael, Izhar Bar-Gad
doaj   +5 more sources

Phase Distortion by Linear Signal Transforms [PDF]

Frontiers in Applied Mathematics and Statistics, 2020
In this study, we are concerned with the effect of certain linear transformations of a signal f on its phase. We are, in particular, interested in phase distortions caused by band-limiting operations. The band-limiting operators serve as a motivation for
Frank Filbir, Frank Filbir, Lukas Liehr
doaj   +5 more sources

Detailed Analysis and Modeling of Phase Noise and Systematic Phase Distortions in FMCW Radar Systems

IEEE Journal of Microwaves, 2022
In coherent continuous-wave (CW) radar systems, such as frequency-modulated CW (FMCW) radar systems, measurement precision is distorted by phase noise and systematic phase errors during radar signal generation.
Peter Tschapek, Georg Korner, Christian Carlowitz, Martin Vossiek   +3 more
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Estimation of phase distortions of the photoplethysmographic signal in digital IIR filtering [PDF]

Scientific Reports
Pre-processing of the photoplethysmography (PPG) signal plays an important role in the analysis of the pulse wave signal. The task of pre-processing is to remove noise from the PPG signal, as well as to transmit the signal without any distortions for ...
Denis G. Lapitan, Dmitry A. Rogatkin, Elizaveta A. Molchanova, Andrey P. Tarasov   +3 more
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Sub-5 nm high-entropy nanoalloys beyond the hume-rothery limit [PDF]

Nature Communications
Lattice mismatch has long constrained alloy compositional design. Governed by the Hume-Rothery rules, severe atomic radius differences (δ) between the constituent elements of nano-alloys can lead to excessive lattice distortions or even phase separation.
Yiqian Du, Xiaodi Zhou, Bangxin Li, Zhizhong Wang, Enyuan Zhou, Yihao Liu, Huibin Zhang, Xuhui Xiong, Jiacheng Cui, Hualiang Lv, Renchao Che   +10 more
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Probing Phase Separation and Local Lattice Distortions in Cuprates by Raman Spectroscopy

Condensed Matter, 2019
It is generally accepted that high temperature superconductors emerge when extra carriers are introduced in the parent state, which looks like a Mott insulator.
Efthymios Liarokapis
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Measurement of the radius of curvature of a spherical surface based on the transport-of-intensity equation

Компьютерная оптика, 2022
The transport-of-intensity equation provides a new non-interferometric and non-iterative access to quantitative information about the phase of a light wave by measuring intensity distributions. This equation can be used to implement a simple and accurate
N.G. Stsepuro, M.S. Kovalev, G.K. Krasin, I.V. Gritsenko, A.V. Bobkov, S.I. Kudryashov   +5 more
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Theoretical Proposals for Improving the Noise Immunity of Receiving Multi-Position Signals in Channels with Variable Parameters

Известия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. At present, the noise immunity of receiving multi-position signals in channels with variable parameters is improved using various signal structures (SS).
S. V. Dvornikov, A. V. Pshenichnikov, A. F. Kryachko, M. R. Bibarsov, G. S. Bibarsova   +4 more
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Scientific and Engineering Proposals for Improving the Noise Immunity of Receiving Multi-Position Signals in Channels with Variable Parameters

Известия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. An important task faced by the developers of modern telecommunication systems consists in increasing the noise immunity of signal reception in channels with variable parameters.
M. R. Bibarsov, S. V. Dvornikov, A. F. Kryachko, A. V. Pshenichnikov   +3 more
doaj   +1 more source

Reconstructing the Spatial Parameters of a Laser Beam Using the Transport-of-Intensity Equation

Sensors, 2022
A simple method for reconstructing the spatial parameters of a laser beam, based on the transport-of-intensity equation, is presented. Registration of cross-section intensity distributions in several planes was carried out using a single CMOS camera. The
Michael Kovalev, Iliya Gritsenko, Nikita Stsepuro, Pavel Nosov, George Krasin, Sergey Kudryashov   +5 more
doaj   +1 more source