Suchergebnisse - "Projection algorithm"

Development of accelerated fully focused SAR altimetry algorithms

Autoren: Hernández Burgos, Sergi

Weitere Verfasser: University/Department: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions

Thesis Advisors: Broquetas Ibars, Antoni, Gibert Gutiérrez, Ferran

Quelle: TDX (Tesis Doctorals en Xarxa)

Schlagwörter: Radar Altimetry, Ocean Surface Topography, Synthetic Aperture Radar (SAR), Fully Focused SAR (FF-SAR), Omega-K Closed-Form Algorithm, Accelerated Back-projection Algorithm, Sub-looked Back-projection Algorithm, Computational Efficiency, GPU Processing, Delay/Doppler Processing, Significant Wave Height (SWH), Ocean Waves, Satellite Missions, Sea Level Monitoring, Àrees temàtiques de la UPC::Enginyeria de la telecomunicació, 621.3 - Enginyeria elèctrica. Electrotècnia. Telecomunicacions, 55 - Geologia. Meteorologia

Dateibeschreibung: application/pdf

Zugangs-URL: http://hdl.handle.net/10803/695129
https://dx.doi.org/10.5821/dissertation-2117-440603

Error-adaptive affine projection algorithm based method for underwater acoustic self-interference suppression

Autoren: CHEN Cong HU Kexue SHI Wentao et al.

Quelle: Dianxin kexue, Vol 41, Pp 44-57 (2025)

Schlagwörter: underwater acoustic communication, self-interference suppression, affine projection algorithm, adaptive filtering, sparse channel estimation, Telecommunication, TK5101-6720, Technology

Dateibeschreibung: electronic resource

Relation: https://doaj.org/toc/1000-0801

Zugangs-URL: https://doaj.org/article/7c06bbf128f64278a8fd5347fcdb5567

Certain fixed point results for novel contractions with applications to variational inequalities, economic growth and market equilibrium via fractional differential equations

Autoren: Mati ur Rahman Muhammad Asif Nehad Ali Shah et al.

Quelle: Boundary Value Problems, Vol 2025, Iss 1, Pp 1-26 (2025)

Schlagwörter: Fixed point, Enriched ( S ˚ , θ , Z ) $(\mathring{\mathscr{S}}, \theta , \mathscr{Z})$ -contractions, Krasnoselskij’s iteration, Variational inequality problems, Novel projection algorithm, Fractional differential equations, Analysis, QA299.6-433

Dateibeschreibung: electronic resource

Relation: https://doaj.org/toc/1687-2770

Zugangs-URL: https://doaj.org/article/7ba70af7f5944451a9dbabcd7f294363

Rapid Qualitative Analysis of Cashmere and Wool Mixed Content Based on Improved XGBoost and SPA Using NIR Spectroscopy

Autoren: Xin Chen Fang Wang Yaolin Zhu et al.

Quelle: Journal of Natural Fibers, Vol 22, Iss 1 (2025)

Schlagwörter: wavelength selection, quantitative analysis, Science, Near infrared, TP890-933, successive projection algorithm, Textile bleaching, dyeing, printing, etc, cashmere, improved extreme gradient boosting

Zugangs-URL: https://doaj.org/article/e98f88107dc64b0f81dcd1bd62f5ae67

A modified two-term conjugate gradient-based projection algorithm for constrained nonlinear equations with applications

Autoren: Yan Xia Dandan Li Songhua Wang

Quelle: Boundary Value Problems, Vol 2025, Iss 1, Pp 1-22 (2025)

Schlagwörter: Two-term conjugate gradient, Projection algorithm, Constrained nonlinear equations, Large-scale, Image denoising, Analysis, QA299.6-433

Dateibeschreibung: electronic resource

Relation: https://doaj.org/toc/1687-2770

Zugangs-URL: https://doaj.org/article/aefe8b0533dd4d0a95f4109e248b588e

A Novel Nonplanar Grid Based Fast Back Projection Algorithm for ConGaL-Borne Terrain Matching SAR

Autoren: Tao He Pengbo Wang Zhirong Men et al.

Quelle: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 18, Pp 28873-28891 (2025)

Schlagwörter: Fast back projection algorithm (FBPA), MirrorSAR constellation, nonplanar imaging grid, synthetic aperture radar (SAR), terrain matching (TM) mode, Ocean engineering, TC1501-1800, Geophysics. Cosmic physics, QC801-809

Dateibeschreibung: electronic resource

Relation: https://ieeexplore.ieee.org/document/11229445/; https://doaj.org/toc/1939-1404; https://doaj.org/toc/2151-1535

Zugangs-URL: https://doaj.org/article/8121a11a486c405ab301e4083ea62a71

A Robust Minimum-Entropy-Based Time-Domain Algorithm for Azimuth Multichannel HRWS SAR Imaging

Autoren: Yuekun Wang Long Zhuang

Quelle: IEEE Access, Vol 13, Pp 196276-196283 (2025)

Schlagwörter: Azimuth multichannel (AMC), synthetic aperture radar (SAR), high-resolution and wide-swath (HRWS), channel phase bias calibration, back-projection algorithm (BPA), Electrical engineering. Electronics. Nuclear engineering, TK1-9971

Dateibeschreibung: electronic resource

Relation: https://ieeexplore.ieee.org/document/11248825/; https://doaj.org/toc/2169-3536

Zugangs-URL: https://doaj.org/article/e8c51772a0c4485f9aeb3a75f5dd7a98

Optimization of Magnet Dimension for MIEC Speed Sensor Using Gradient Projection Algorithm

Autoren: Yiru Xiao Jikai Zhang Yaoting Han et al.

Quelle: IEEE Open Journal of Instrumentation and Measurement, Vol 4, Pp 1-7 (2025)

Schlagwörter: Eddy current testing, gradient projection algorithm, motion-induced eddy current (MIEC), sensor, speed measurement, Instruments and machines, QA71-90, Electrical engineering. Electronics. Nuclear engineering, TK1-9971

Dateibeschreibung: electronic resource

Relation: https://ieeexplore.ieee.org/document/11082308/; https://doaj.org/toc/2768-7236

Zugangs-URL: https://doaj.org/article/f0cb92898f1e475f9e3dec15ab5cc685

Investigation of the Electrical Capacitance Tomography System for Determining the Spatial Distribution of Moisture in Grain Storage

Autoren: Shamte Kawambwa Alfred J. Mwambela

Quelle: Tanzania Journal of Engineering and Technology; Vol. 44 No. 1 (2025); 233-244

Schlagwörter: Grain Storage, Electrical Capacitance Tomography, Grain Moisture Contents, Linear Back Projection Algorithm, Sensor Electronic

Dateibeschreibung: application/pdf

Zugangs-URL: https://www.ajol.info/index.php/tjet/article/view/296684

Impact of maturity and variety on the hyperspectral detection model for determining soluble solid content in fresh apricots

Autoren: Wang, Runrun Zhang, Shujuan Zhang, Zhao et al.

Quelle: Journal of Agricultural Engineering 61(6):829-846. 2024

Strong convergence of inertial shrinking projection method for split best proximity point problem and mixed equilibrium problem

Autoren: Shamshad Husain Mohd Furkan Mubashshir U. Khairoowala

Quelle: The Journal of Analysis. 33:31-48

Schlagwörter: strong convergence, mixed equilibrium problem, Iterative procedures involving nonlinear operators, Approximation with constraints, Variational and other types of inequalities involving nonlinear operators (general), best proximally nonexpansive mapping, shrinking projection algorithm

Dateibeschreibung: application/xml

Zugangs-URL: https://zbmath.org/8035332
https://doi.org/10.1007/s41478-023-00713-0

Convergence Rate Analysis of a Dykstra-Type Projection Algorithm

Autoren: Xiaozhou Wang Ting Kei Pong Department of Applied Mathematics

Weitere Verfasser: Xiaozhou Wang Ting Kei Pong Department of Applied Mathematics

Quelle: SIAM Journal on Optimization. 34:563-589

Schlagwörter: Linear convergence, Dykstra's projection algorithm, Optimization and Control (math.OC), Kurdyka-Lojasiewicz property, 0211 other engineering and technologies, FOS: Mathematics, 02 engineering and technology, C1,α-cone reducibility, Mathematics - Optimization and Control

Zugangs-URL: http://arxiv.org/abs/2301.03026

Distributed Newton Step Projection Algorithm for Online Convex Optimization Over Time-Varying Unbalanced Networks

Autoren: Jiayi Wu Yu-Ping Tian

Quelle: IEEE Access, Vol 12, Pp 1189-1200 (2024)

Schlagwörter: multi-agent network, Newton step projection algorithm, time-varying unbalanced directed graphs, 0202 electrical engineering, electronic engineering, information engineering, online convex optimization, Electrical engineering. Electronics. Nuclear engineering, 02 engineering and technology, 0101 mathematics, 01 natural sciences, Distributed optimization, TK1-9971

Zugangs-URL: https://doaj.org/article/55f29a4ee6f849c6b58574269ed06676

Absolute Phase Estimation in Repeat-Pass CSAR Interferometry Based on Backprojection and Split-Bandwidth Techniques

Autoren: Jianpeng Li Daoxiang An Yongping Song et al.

Quelle: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 17, Pp 2409-2421 (2024)

Schlagwörter: Ocean engineering, QC801-809, Back projection algorithm (BPA), Geophysics. Cosmic physics, weighted least square (WLS), 0211 other engineering and technologies, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, TC1501-1800, circular synthetic aperture radar interferometry (In-CSAR), split-bandwidth

Zugangs-URL: https://doaj.org/article/8d84a7feb770483ca80c60b9fe03abbe

Filtered-X Quasi Affine Projection Algorithm for Active Noise Control Networks

Autoren: Ferrer Contreras, Miguel de Diego Antón, María Gonzalez, Alberto et al.

Weitere Verfasser: Ferrer Contreras, Miguel de Diego Antón, María Gonzalez, Alberto et al.

Quelle: RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Universitat Politècnica de València (UPV)
IEEE/ACM Transactions on Audio, Speech, and Language Processing

Schlagwörter: TEORÍA DE LA SEÑAL Y COMUNICACIONES, Affine projection algorithm, Variable step-size, Active noise control, Distributed Filtered-X

Dateibeschreibung: application/pdf

Zugangs-URL: https://riunet.upv.es/handle/10251/214657
https://hdl.handle.net/10251/214657
https://doi.org/10.1109/taslp.2024.3458806

Novel Forward-looking Three-dimensional Imaging Based on Vortex Electromagnetic Wave Radar

Autoren: Haoran PAN Hui MA Dunfa HU et al.

Quelle: Leida xuebao, Vol 13, Iss 5, Pp 1109-1122 (2024)

Schlagwörter: vortex electromagnetic wave radar (vemwr), forward-looking three-dimensional imaging, time division multiple modes (tdmm), back-projection algorithm (bpa), range doppler, Electricity and magnetism, QC501-766

Dateibeschreibung: electronic resource

Relation: https://doaj.org/toc/2095-283X

Zugangs-URL: https://doaj.org/article/01a5eb5415624d33beea9fd2f472d101

An Analytical Algorithm for Tensor Tomography From Projections Acquired About Three Axes

Autoren: Tao, Weijie Rohmer, Damien Gullberg, Grant T et al.

Quelle: IEEE Transactions on Medical Imaging. 41(11)

Schlagwörter: Information and Computing Sciences, Graphics, Augmented Reality and Games, Biomedical Imaging, Bioengineering, Humans, Algorithms, Tomography, X-Ray Computed, Tomography, Phantoms, Imaging, Imaging, Three-Dimensional, Image Processing, Computer-Assisted, Tensors, Image reconstruction, X-ray imaging, Ellipsoids, Three-dimensional displays, Filtering algorithms, Biomedical measurement, Filtered back-projection algorithm, solenoidal and irrotational components, tensor tomography, directional X-ray projections, Engineering, Nuclear Medicine & Medical Imaging, Information and computing sciences

Dateibeschreibung: application/pdf

Zugangs-URL: https://escholarship.org/uc/item/8k10f9vp
https://escholarship.org/content/qt8k10f9vp/qt8k10f9vp.pdf

Low Cost Variable Step-size LMS with Maximum Similarity to the Affine Projection Algorithm

Autoren: Ferrer Contreras, Miguel de Diego Antón, María Gonzalez, Alberto et al.

Weitere Verfasser: Ferrer Contreras, Miguel de Diego Antón, María Gonzalez, Alberto et al.

Quelle: RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Universitat Politècnica de València (UPV)
IEEE Open Journal of Signal Processing, Vol 5, Pp 82-91 (2024)
IEEE Open Journal of Signal Processing

Schlagwörter: affine projection algorithm, TEORÍA DE LA SEÑAL Y COMUNICACIONES, Affine projection algorithm, Variable step-size, variable step-size, Adaptive filters, 03.- Garantizar una vida saludable y promover el bienestar para todos y todas en todas las edades, Electrical engineering. Electronics. Nuclear engineering, TK1-9971

Dateibeschreibung: application/pdf

Zugangs-URL: https://riunet.upv.es/handle/10251/205081
https://doaj.org/article/7adc3145b18b4ca48575d2214b820a96
https://hdl.handle.net/10251/205081
https://doi.org/10.1109/ojsp.2023.3340106

Development of algorithms and programs for estimation of electron content and radiotomographic restoration of the electron concentration field in the ionosphere based on radio signals of satellite systems ; Разработка алгоритмов и программ оценивания электронного содержания и радиотомографического восстановления поля концентрации электронов в ионосфере на основе радиосигналов спутниковых систем

Autoren: A. M. Krot I. E. Savinykh A. S. Shapkin et al.

Weitere Verfasser: A. M. Krot I. E. Savinykh A. S. Shapkin et al.

Quelle: Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series; Том 61, № 1 (2025); 47-62 ; Известия Национальной академии наук Беларуси. Серия физико-математических наук; Том 61, № 1 (2025); 47-62 ; 2524-2415 ; 1561-2430 ; 10.29235/1561-2430-2025-61-1

Schlagwörter: алгоритм обратного проецирования Радона, navigation radio signal, total electron content, ionospheric electron concentration field, ionosphere radio tomography, image restoration algorithms, projection slice theorem, Radon back projection algorithm, навигационный радиосигнал, полное электронное содержание, поле концентрации электронов в ионосфере, радиотомография ионосферы, алгоритмы восстановления изображений, теорема о проекционном срезе

Dateibeschreibung: application/pdf

Relation: https://vestifm.belnauka.by/jour/article/view/825/628; Дэвис, К. Радиоволны в ионосфере: пер. с англ. / К. Дэвис. – М.: Мир. – 1973. – 502 с.; ГЛОНАСС. Принципы построения и функционирования / Р. В. Бакитько, Е. Н. Болденков, Н. Т. Булавский [и др.]; под ред. А. И. Перова, В. Н. Харисова. – 4-е изд., перераб. и доп. – М.: Радиотехника, 2010. – 800 с.; Куницын, В. Е. Радиотомография ионосферы / В. Е. Куницын, Е. Д. Терещенко, Е. С. Андреева. – М.: Физматлит, 2007. – 336 с.; Афраймович, Э. Л. GPS-мониторинг верхней атмосферы Земли / Э. Л. Афраймович, Н. П. Перевалова. – Иркутск: ГУ НЦ ВСНЦ СО РАМН, 2006. – 480 с.; Романов, А. А. Измерение полного электронного содержания ионосферы Земли с помощью многочастотного когерентного зондирующего сигнала / А. А. Романов, А. В. Новиков, А. А. Романов // Вопросы электромеханики. Труды НПП ВНИИЭМ. – 2009. – Т. 111, № 4. – С. 31–36.; Семейство наноспутников изучения ионосферы на базе платформы SamSat разработки Самарского университета / И. В. Белоконов, Е. А. Болтов, Н. А. Елисов [и др.] // Восьмой Белорусский космический конгресс, Минск, 25–27 окт. 2022 г.: материалы конгресса: в 2 т. – Минск, 2022. – Т. 1. – С. 167–170.; Определение концентрации электронов в ионосфере над территорией Республики Беларусь по данным глобальных навигационных спутниковых систем / А. O. Наумов, П. A. Хмарский, Н. И. Бышнев [и др.] // Весці Нацыянальнай акадэміі навук Беларусі. Серыя фізіка-тэхнічных навук. – 2024. – Т. 69, № 1. – С. 53–64. https://doi.org/10.29 235/1561-8358-2024-69-1-53-64; Beacon satellite receiver for ionospheric tomography / J. Vierinen, J. Norberg, M. S. Lehtinen [et al.] // Radio Science. – 2014. – Vol. 49, № 12. – P. 1141–1152. https://doi.org/10.1002/2014RS005434; Способ оценивания полного электронного содержания в ионосфере на основе ретрансляции сигналов глобальной навигационной спутниковой системы GPS / И. В. Белоконов, А. М. Крот, С. В. Козлов [и др.] // Информатика. – 2023. − Т. 20, № 4. – С. 7–27. https://doi.org/10.37661/1816-0301-2023-20-2-7-27; Krot, A. M. Development of radiotomography algorithms for the study of electron clouds in the ionosphere and structures in the dusty plasma using low-orbital satellite systems / A. M. Krot, I. E. Savinykh // Proceedings of 15th Moscow Solar system Symposium (15M-S3), Space Research Institute, Moscow, Russia, 21–25 October, 2024. – M., 2024. – P. 230−231.; Ратклифф, Дж. А. Магнито-ионная теория и ее приложения к ионосфере: пер. с англ. / Дж. А. Ратклифф. – М.: Изд-во иностр. лит., 1962. – 248 с.; Шапкин, А. С. Алгоритм оценки абсолютного полного электронного содержания ионосферы по данным двухчастотных фазовых и дальностных спутниковых измерений / А. С. Шапкин // Информатика. – 2024. − Т. 21, № 1. – С. 48–64. https://doi.org/10.37661/1816-0301-2024-21-1-48-64; Variability of GPS/GLONASS differential code biases / A. A. Mylnikova, Yu. V. Yasyukevich, V. E. Kunitsyn, A. M. Pa dokhin // Results in Physics. – 2015. – Vol. 5. – P. 9–10. https://doi.org/10.1016/j.rinp.2014.11.002; Hofmann-Wellenhof, B. Global Positioning System: Theory and Practice / B. Hofmann-Wellenhof, H. Lichtenegger, J. Collins. – Springer Vienna, 2001. – XXIV, 382 p. https://doi.org/10.1007/978-3-7091-6199-9; Study on cycle-slip detection and repair methods for a single dual-frequency global positioning system (GPS) receiver / La Van Hieu, V. G. Ferreira, Xiufeng He, Xu Tang // Boletim de Ciências Geodésicas. – 2014. – Vol. 20, № 4. – P. 984–1004. https://doi.org/10.1590/s1982-21702014000400054; Cycle slip detection and repair for undifferenced GPS observations under high ionospheric activity / Changsheng Cai, Zhizhao Liu, Pengfei Xia, Wujiao Dai // GPS Solutions. – 2013. – Vol. 17. – P. 247–260. https://doi.org/10.1007/s10291-0120275-7; Ya’acob, N. Determination of GPS total electron content using single layer model (SLM) ionospheric mapping function / N. Ya’acob, M. Abdullah, M. Ismail // International Journal of Computer Science and Network Security. – 2008. – Vol. 8, № 9. – P. 154–160.; Даджион, Д. Цифровая обработка многомерных сигналов: пер. с англ. / Д. Даджион, P. Mepcepo. – М.: Мир, 1988. – 488 с.; Савиных, И. Э. Радиотомографический анализ ионосферы детерминистскими методами / И. Э. Савиных // Фундаментальные и прикладные космические исследования: материалы ХХI конф., Москва, 10–12 апр. 2024 г. – М., 2024. – С. 157–158.; Крот, А. М. Синтез алгоритмов БПФ по расщепляемому основанию для действительных и эрмитово-симметричных последовательностей / А. М. Крот, Е. Б. Минервина // Известия ВУЗов СССР. Радиоэлектроника. – 1989. – Т. 32, № 12. – С. 12–17.; Krot, A. M. Comment: Conjugate pair fast Fourier transform / A. M. Krot, H. B. Minervina // Electronics Letters. – 1992. – Vol. 28, № 12. – P. 1143–1144. https://doi.org/10.1049/el:19920721; Крот, А. М. Быстрые алгоритмы и программы цифровой спектральной обработки сигналов и изображений / А. М. Крот, Е. Б. Минервина. – Минск: Навука i тэхнiка, 1995. – 407 с.; https://vestifm.belnauka.by/jour/article/view/825

Verfügbarkeit: https://vestifm.belnauka.by/jour/article/view/825
https://doi.org/10.29235/1561-2430-2025-61-1-47-62

Fast superconvergent solvers for weakly singular Hammerstein equations

Autoren: Mohamed Arrai Chafik Allouch Abderrahim Aslimani

Quelle: Numerical Algorithms. 97:345-372

Schlagwörter: Finite element method, Inverse Problems in Mathematical Physics and Imaging, Dykstra's projection algorithm, Economics, Inverse Problems, Local Convergence, Quadrature (astronomy), Superconvergence, Mathematical analysis, 01 natural sciences, Convergence Analysis of Iterative Methods for Nonlinear Equations, Higher-Order Methods, Engineering, FOS: Mathematics, Projection method, 0101 mathematics, Biology, Anomalous Diffusion Modeling and Analysis, Mathematical Physics, Economic growth, Numerical Analysis, Computer network, Ecology, Physics, 4. Education, Projection (relational algebra), Mathematical optimization, Pure mathematics, Partition (number theory), Rate of convergence, Applied mathematics, Computer science, Algorithm, Piecewise, Combinatorics, Channel (broadcasting), Modeling and Simulation, FOS: Biological sciences, Electrical engineering, Physical Sciences, Convergence (economics), Kernel (algebra), Thermodynamics, Iterative Methods, Type (biology), Mathematics