Results 21 to 30 of about 86,855 (259)
Two-Dimensional Discrete Coupled Fractional Fourier Transform (DCFrFT)
Fractal and FractionalThe fractional Fourier transform is critical in signal processing and supports many applications. Signal processing is one notable application. Implementing the fractional Fourier transform requires discrete versions.
Asma Elshamy +2 more
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International Journal of Analysis and Applications, 2021 In this paper, a new two-dimensional quaternion fractional Fourier transform is developed. The properties such as linearity, shifting and derivatives of the quaternion-valued function are studied.
Khinal Parmar, V. R. Lakshmi Gorty
doaj
Objective Center-Finding Algorithm for Tropical Cyclones in Numerical Models
Atmosphere, 2019 Precise center-detection of tropical cyclones (TCs) is critical for dynamic analysis in high resolution model data. The existence of both smaller scale perturbations and larger scale circulations could reduce the accuracy of center positioning.
Chengwu Zhao +3 more
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Array-Beamspace Mapping for Planar Two-Dimensional Beam-Forming
IEEE Access, 2023 As sixth-generation (6G) communication systems manifest at carrier frequencies well into the millimeter-wave (mmW) spectrum, the ability of conventional digital beamforming techniques to handle the beam-bandwidth product is increasingly stressed ...
William L. Beardell +3 more
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Resonance lineshapes in two-dimensional Fourier transform spectroscopy
Optics Express, 2010 We derive an analytical form for resonance lineshapes in two-dimensional (2D) Fourier transform spectroscopy. Our starting point is the solution of the optical Bloch equations for a two-level system in the 2D time domain. Application of the projection-slice theorem of 2D Fourier transforms reveals the form of diagonal and cross-diagonal slices in the ...
Mark E, Siemens +4 more
openaire +2 more sources
E3S Web of Conferences, 2019 In modern systems of remote sensing two-dimensional fast Fourier transform (FFT) has been widely used for digital processing of satellite images and subsequent image filtering.
Noskov Mikhail +4 more
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Interference suppression in digital holographic images
Компьютерная оптикаThis paper presents a digital filtering software module for noise suppression in reconstructed holographic images and in original digital holograms.
N.N. Yudin +7 more
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Two-Dimensional Quaternion Fractional Fourier Transform: Definition and Probabilistic Analysis
Fractal and FractionalThis article presents a detailed study of the two-dimensional quaternion fractional Fourier transform (2D QFRFT) and investigates its role in the probabilistic analysis of quaternion-valued signals.
Muhammad Adnan Samad +5 more
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Discrimination capacity analysis of FTIR-PCA and EEM-PARAFAC on dandelion tissues extracts
Food Innovation and Advances, 2023 Dandelion root contains triterpenoids, polyphenols and flavonoids, dandelion leaf is rich in polyphenols, flavonoids, flavonoids glycosides, and dandelion flower mainly contains flavonoids, among other substances.
Guoqing Li, Hui Zou, Yilun Chen
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FEBS Open Bio, EarlyView.Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei +3 more
wiley +1 more source