Results 11 to 20 of about 808,226 (293)

Enhancing the shear strength of reinforced concrete deep beams using thin-diameter near-surface mounted steel wires: an experimental study [PDF]

open access: yesScientific Reports
This study investigates the effectiveness of near-surface mounted wire (NSMW) reinforcement as a shear-strengthening technique for reinforced concrete (RC) deep beams.
Mohamed Elkafrawy   +2 more
doaj   +2 more sources

Performance Investigation of Linearly Arranged Circular, Circular Planer, Rectangular, and Concentric Circular Antenna Arrays Using Robust NVL Techniques

open access: yesApplied Sciences, 2022
In this research, linearly arranged circular antenna array (LCAA), linearly arranged circular planer antenna array (LCPAA), linearly arranged rectangular antenna array (LRAA), and linearly arranged concentric circular antenna array (LCCAA) are analyzed ...
Imteaz Rahaman   +8 more
doaj   +1 more source

A CLT on the SNR of Diagonally Loaded MVDR Filters [PDF]

open access: yesIEEE Transactions on Signal Processing, 2012
This paper studies the fluctuations of the signal-to-noise ratio (SNR) of minimum variance distorsionless response (MVDR) filters implementing diagonal loading in the estimation of the covariance matrix. Previous results in the signal processing literature are generalized and extended by considering both spatially as well as temporarily correlated ...
Francisco Rubio 0001   +2 more
openaire   +5 more sources

A Full Loading-Based MVDR Beamforming Method by Backward Correction of the Steering Vector and Reconstruction of the Covariance Matrix

open access: yesApplied Sciences, 2022
In order to improve the performance of the diagonal loading-based minimum variance distortionless response (MVDR) beamformer, a full loading-based MVDR beamforming method is proposed in this paper. Different from the conventional diagonal loading methods,
Jing Zhou, Changchun Bao
doaj   +1 more source

Behavior of Shear Link of WF Section with Diagonal Web Stiffener of Eccentrically Braced Frame (EBF) of Steel Structure [PDF]

open access: yesITB Journal of Engineering Science, 2010
This paper presents results of numerical and experimental study of shear link behavior, utilizing diagonal stiffener on web of steel profile to increase shear link performance in an eccentric braced frame (EBF) of a steel structure system.
Yurisman   +3 more
doaj   +1 more source

A robust beamforming algorithm based on steering vector mismatch

open access: yesXi'an Gongcheng Daxue xuebao, 2021
A robust beamforming algorithm of particle swarm support vector machine is proposed, which can effectively overcome the influence of steering vector mismatch caused by non-ideal factors such as the array element position disturbance and the arrival angle
Lin CUI, Yixin ZHANG, Yameng JIAO
doaj   +1 more source

The Capon Method for Mercury's Magnetic Field Analysis

open access: yesFrontiers in Physics, 2020
Characterization of Mercury's internal and external magnetic field is one of the primary goals of the magnetometer experiment on board the BepiColombo MPO (Mercury Planetary Orbiter) spacecraft.
Simon Toepfer   +5 more
doaj   +1 more source

Performance Analysis of Linearly Arranged Concentric Circular Antenna Array with Low Sidelobe Level and Beamwidth Using Robust Tapering Technique

open access: yesMicromachines, 2022
In this research, a novel antenna array named Linearly arranged Concentric Circular Antenna Array (LCCAA) is proposed, concerning lower beamwidth, lower sidelobe level, sharp ability to detect false signals, and impressive SINR performance.
Imteaz Rahaman   +8 more
doaj   +1 more source

A CLT on the SINR of the diagonally loaded Capon/MVDR beamformer [PDF]

open access: yes2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
The Capon or minimum variance distorsionless response (MVDR) beamformer is a prominent example of spatial filtering structure in sensor array signal processing. Typical implementations of this beamformer are based on a regularized or diagonally-loaded version of the sample covariance matrix estimator.
Rodríguez Rubio, Francisco   +2 more
openaire   +3 more sources

Performance analysis of beamformers using generalized loading of the covariance matrix in the presence of random steering vector errors [PDF]

open access: yes, 2005
Robust adaptive beamforming is a key issue in array applications where there exist uncertainties about the steering vector of interest. Diagonal loading is one of the most popular techniques to improve robustness.
Besson, Olivier, Vincent, François
core   +1 more source

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