Results 41 to 50 of about 173,505,536 (199)
Beamforming Direction of Arrival (DoA) Based in a Software-Defined Radio [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic ApplicationsThis paper presents the development and experimental validation of a low-cost Direction of Arrival (DoA) estimation system using Software-Defined Radio (SDR) technology. The system employs an NI USRP B-210 with two printed log-periodic dipole antennas in
Marcelo B. Perotoni +2 more
doaj +2 more sources
Political Partisanship and State‐Level Bank Efficiency
Financial Review, Volume 61, Issue 4, Page 1197-1223, November 2026.ABSTRACT We examine the relationship between political partisanship and commercial bank efficiency in the United States from 1972 to 2020, assessing the persistent influence of political affiliations at the state and District of Columbia levels. Bank efficiency scores are estimated using a double‐bootstrap approach, and the analysis is conducted within
Jeremy Eng‐Tuck Cheah +3 more
wiley +1 more source
Jordanian Journal of Computers and Information Technology, 2020 An accurate method for estimating the direction-of-arrival (DOA) jointly with the frequencies of an unknown number of source signals is proposed using the Eigen-approach. Using the minimum eigenvalues of the autocorrelation matrices produces both the DOA
Thabet Mismar
doaj +1 more source
Two-Dimensional Direction-of-Arrival Estimation Using Stacked Intelligent Metasurfaces [PDF]
IEEE Journal on Selected Areas in CommunicationsStacked intelligent metasurfaces (SIMs) are capable of emulating reconfigurable physical neural networks by utilizing electromagnetic (EM) waves as carriers. They can also perform various complex computational and signal processing tasks.
Jian-Cheng An +6 more
semanticscholar +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.Abstract Nitrogen dioxide (NO2) is a primary pollutant present at high concentrations in urban areas. Ground based measurements remain sparse and satellite observations rely on retrievals, so understanding intraurban, diurnal‐scale changes in NO2 is challenging.
R. H. Mooers +6 more
wiley +1 more source
DOA Estimation in Non-Uniform Noise Using Matrix Completion via Alternating Projection
IEEE Open Journal of Antennas and Propagation, 2021 In this paper, direction-of-arrival (DOA) estimation in the presence of non-uniform noise is investigated. To achieve high estimation accuracy, the DOA estimation problem is solved with the use of a matrix completion approach.
Yingna Fei +4 more
doaj +1 more source
Advanced Science, Volume 13, Issue 57, 14 October 2026.The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang +6 more
wiley +1 more source
Research Progress in Methods to Estimate High-resolution Direction of Arrival
水下无人系统学报With the widespread application of array signal processing, the estimation of direction of arrival(DOA) as the core problem of array signal processing has made significant progress.
Wei ZHAO, Xuan LI, Chengpeng HAO
doaj +1 more source
IEEE Access, 2019 This paper discusses the direction-of-arrival (DOA) estimation problem in multiple-input multiple-output (MIMO) radar with non-orthogonal waveforms.
Chong Shen +4 more
doaj +1 more source
Advanced Intelligent Discovery, Volume 2, Issue 5, October 2026.Predictive models successfully screen nanoparticles for toxicity and cellular uptake. Yet, complex biological dynamics and sparse, nonstandardized data limit their accuracy. The field urgently needs integrated artificial intelligence/machine learning, systems biology, and open‐access data protocols to bridge the gap between materials science and safe ...
Mariya L. Ivanova +4 more
wiley +1 more source