Zobrazeno 1 - 10
of 450
pro vyhledávání: '"Adaptive-additive algorithm"'
Autor:
Gulan Zhang
Publikováno v:
Geophysical Prospecting. 66:34-46
The short-time Fourier transform allows calculation of the amplitude and initial phase distribution of the real signal as functions of time and frequency, whereas the wavelet transform allows calculation of the amplitude and instantaneous phase distr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cb8a211788db7d1a3b0ce86e51249f1
https://doi.org/10.1111/1365-2478.12528
https://doi.org/10.1111/1365-2478.12528
Publikováno v:
IEEE Signal Processing Letters. 24:638-642
We propose and comprehensively analyze a computationally efficient algorithm to estimate the parameters of a real sinusoidal signal in noise. This method uses the fast Fourier Transform and is, therefore, computationally efficient. Accounting for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6478e47b5ef43a666b299ce23366c85
https://doi.org/10.1109/lsp.2017.2684223
https://doi.org/10.1109/lsp.2017.2684223
Publikováno v:
Journal of Modern Optics. 64:1479-1486
Phase-shifting interferometry (PSI) is an effective technique in optical measurement. In this paper, a noniterative algorithm for retrieving the unknown phase shifts in three frame generalized PSI is proposed, in which the interference term of each f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4a3c77a956472bd9dae5c832b47f81b
https://doi.org/10.1080/09500340.2017.1295109
https://doi.org/10.1080/09500340.2017.1295109
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 16:2150-2154
In this letter, a hybrid algorithm based on the genetic algorithm (GA) and modified iterative Fourier transform (MIFT) technique called HGAMIFT is proposed for large thinned array synthesis. By employing a perturbation mechanism, the MIFT can achieve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ec81591144c2fcb077b6d4130a85644
https://doi.org/10.1109/lawp.2017.2700865
https://doi.org/10.1109/lawp.2017.2700865
Autor:
Peter Zizler
Publikováno v:
The Electronic Journal of Linear Algebra. 31:156-166
In the context of the non-abelian Fourier transform, the natural extension of the amplitude and phase response to a convolution by a given filter mask are shown to be the polar decompositions of the Fourier transform matrices. A specific example rega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d40093befdb1b4fb3fee1200f215dfca
https://doi.org/10.13001/1081-3810.3271
https://doi.org/10.13001/1081-3810.3271
Publikováno v:
IEEE Photonics Journal, Vol 8, Iss 1, Pp 1-7 (2016)
A novel method composed of phase retrieval is proposed to precisely recover the phase distribution in the double random phase encoding system. The model of a point light source is employed to illuminate the system, in the output side of which several
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fb628609cb361b7690d61c5ddea9049
https://doi.org/10.1109/jphot.2016.2527699
https://doi.org/10.1109/jphot.2016.2527699
Publikováno v:
IET Microwaves, Antennas & Propagation. 10:16-24
This study investigates the synthesis of multiple-pattern periodic phase-only control planar arrays. A hybrid generalised iterative Fourier technique is proposed to iteratively derive the array element excitations efficiently from the prescribed arra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56717355baf1895be1f3ec958cbe5a8e
https://doi.org/10.1049/iet-map.2014.0595
https://doi.org/10.1049/iet-map.2014.0595
Publikováno v:
Optics and Precision Engineering. 24:2565-2571
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68a1a2b30b99f784bdd5580723489b07
https://doi.org/10.3788/ope.20162410.2565
https://doi.org/10.3788/ope.20162410.2565
Publikováno v:
Applied optics. 56(29)
Quality control of micro-nano structured and freeform surfaces is becoming increasingly important, which leads to challenging requirements in the measurement and characterization of rough and highly reflective surfaces. As an important measurement te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac19a31c8dd5666201d199416580e180
https://pubmed.ncbi.nlm.nih.gov/29047682
https://pubmed.ncbi.nlm.nih.gov/29047682
Autor:
Chao Tian, Shengchun Liu
Publikováno v:
Optics express. 25(18)
Fringe analysis in two-shot phase-shifting interferometry is important but meets challenges due to a limited number of images, corrupting noise, and background modulation. Here we propose an effective algorithm for phase retrieval from two interferog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f87cee80699734ff6df5f496b1271c5
https://pubmed.ncbi.nlm.nih.gov/29041462
https://pubmed.ncbi.nlm.nih.gov/29041462