Results 21 to 30 of about 5,257,093 (276)

Spectral line extraction based on ant-colony algorithm

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
A spectral-line-extraction algorithm based on the ant-colony algorithm is proposed to address the difficulty of extracting spectral lines in low signal-to-noise ratio conditions, and the problem that results from the optimal path algorithm falls into ...
Yusheng Cheng   +4 more
doaj   +1 more source

Review of Rydberg Spectral Line Formation in Plasmas

open access: yesAtoms, 2023
The present review is dedicated to the problem of an array of transitions between highly-excited atomic levels. Hydrogen atoms and hydrogen-like ions in plasmas are considered here. The presented methods focus on calculation of spectral line shapes. Fast
Andrey Yu. Letunov, Valery S. Lisitsa
doaj   +1 more source

Model parameter estimations of the multi-channel turbulence response from flutter flight tests based on autoregressive spectra

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
Signal processing of flutter flight test data enables verification of aircraft flutter design, and the signal from a flutter flight test excited by atmospheric turbulence is a particularly important form of the flutter test.
Shiqiang Duan, Hua Zheng
doaj   +1 more source

Neural network-based image reconstruction in swept-source optical coherence tomography using undersampled spectral data

open access: yesLight: Science & Applications, 2021
Optical coherence tomography (OCT) is a widely used non-invasive biomedical imaging modality that can rapidly provide volumetric images of samples. Here, we present a deep learning-based image reconstruction framework that can generate swept-source OCT ...
Yijie Zhang   +7 more
doaj   +1 more source

Spectral line-by-line pulse shaping of on-chip microresonator frequency combs [PDF]

open access: yes, 2011
Recently, on-chip comb generation methods based on nonlinear optical modulation in ultrahigh-quality-factor monolithic microresonators have been demonstrated, where two pump photons are transformed into sideband photons in a four-wave-mixing process ...
Lei Chen   +15 more
core   +1 more source

Rapid Scanning of the Spectral Line Profile With [PDF]

open access: yesKirkuk Journal of Science, 2011
The problem of rapid scanning of spectral line profiles with help of Fabry-Perot Interferometer, and to investigate the physical parameters of these profiles is discussed.
Saalaar Z. Mohamed
doaj   +1 more source

Precise measurements of the wavelength in KrCl laser spectral region (222 nm)

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The technique for precise measurements of wavelengths in the range around 222 nm (45030 cm–1) has been presented. The reciprocal linear dispersion of the spectrometer was 0.529 Å/mm.
N.G. Zubrilin
doaj   +1 more source

Spectral Line Shapes in Plasmas II

open access: yesAtoms, 2019
The Spectral Line Shapes in Plasmas (SLSP) code comparison workshop series [...]
Evgeny Stambulchik   +3 more
doaj   +1 more source

A LIBS Spectral Self-Absorption Correction Method Using Voigt Profile Fitting for the Application of Magnesium Analysis in Phosphorus Ore

open access: yes, 2020
The concentration of MgO is one of the most important parameters in the phosphate ore flotation. The fast detection of the concentration of MgO has great significance for the optimization of the flotation, the improvement of the efficiency and the ...
Sun Lan-xiang   +4 more
core   +1 more source

A case study of HF radar spectra and 630.0 nm auroral emission in the pre-midnight sector [PDF]

open access: yesAnnales Geophysicae, 2001
A comparison of HF radar backscatter observed by the CUTLASS Finland radar, meridian scanning photometer data from Longyearbyen, magnetic field variations from IMAGE stations, and particle precipitation measured by the DMSP F12 spacecraft is presented.
M. Lester   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy