Results 1 to 10 of about 148,969 (298)

Diagonal Loading Beamforming Based on Aquila Optimizer

IEEE Access, 2023
Traditional beamforming algorithms are only applicable to ideal environments. When the array antenna receives data under circumstances of small snapshots or large signal-to-noise ratio(SNR), noise eigenvalues of classic sample matrix inversion(SMI) and ...
Chao Liu, Jiaqi Zhen
doaj   +4 more sources

Steering vector errors and diagonal loading [PDF]

IEE Proceedings - Radar, Sonar and Navigation, 2004
Diagonal loading is one of the most widely used and effective methods to improve robustness of adaptive beamformers. The authors consider its application to the case of steering vector errors, i.e. when there exists a mismatch between the actual steering vector of interest and the presumed one. More precisely, the problem addressed is that of optimally
Vincent, François, Besson, Olivier
openaire   +5 more sources

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

ITB 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, Bambang Budiono, Muslinang Moestopo, Made Suarjana   +3 more
doaj   +4 more sources

In Vivo hip joint loading during cross-country skiing on a simulator [PDF]

Frontiers in Bioengineering and Biotechnology
BackgroundReturn to sports following total hip arthroplasty (THA) is important to an increasingly younger and active clientele. However, knowledge about in vivo joint forces during sports is scarce and often only estimated.
Daniela Aschenbrenner, Pamela Scupin, Jörn Dymke, Sijia Zhou, Tazio Maleitzke, Tazio Maleitzke, Tazio Maleitzke, Tazio Maleitzke, Stefan Hainzl, Georg N. Duda, Carsten Perka, Bernd Wolfarth, Bernd Wolfarth, Tobias Winkler, Tobias Winkler, Tobias Winkler, Philipp Damm   +16 more
doaj   +2 more sources

A modified near-field target localization method based on vector diagonal loading [PDF]

Scientific Reports
Addressing the issue of poor positioning performance of the near-field MVDR (Minimum Variance Distance Reciprocal) algorithm due to limited sampling data, this study proposes a combination of vector hydrophones and an improved angle loading technique to ...
Qing Ji, Dawei Xiao, Lulu Du, Taotao Xie, Yandong Pang   +4 more
doaj   +2 more sources

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

Scientific 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, Mohamed A. Altobgy, Sabry Fayed   +2 more
doaj   +2 more sources

Broadband Beamforming Using the Least Square Method Improved via Adaptive Diagonal Loading [PDF]

Journal of Electromagnetic Engineering and Science, 2023
The least square method (LSM) is a commonly used beamforming method. However, it limits the beamforming frequency bandwidth and is vulnerable to noise; therefore, diagonal loading is used to overcome these limitations.
Euiho Shin, Young-seek Chung, Cheolsun Park, Seonkyo Kim, Jungsuek Oh   +4 more
doaj   +1 more source

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

Applied 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, Md. Shakiul Jafor, Narinderjit Singh Sawaran Singh, Md Ashraful Haque, Antar Kumar Biswas, Md Afzalur Rahman, M Azman B Zakariya, Ghulam E Mustafa Abro, Nayan Sarker   +8 more
doaj   +1 more source

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

Applied 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

Steering vector uncertainties and diagonal loading [PDF]

Processing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal, 2005
In this paper, we study the performance of diagonally loaded beam-formers in the presence of steering vector errors i.e. when there exists a mismatch between the actual steering vector of interest and the presumed one. We consider the problem of optimally selecting the loading level with a view to maximise the signal to interference plus noise ratio ...
Vincent, François, Besson, Olivier
openaire   +2 more sources