Results 11 to 20 of about 134,685 (302)

Direction-of-Arrival Estimation Based on Frequency Difference-Wavenumber Analysis for Sparse Vertical Array Configuration. [PDF]

open access: yesSensors (Basel), 2022
Frequency–wavenumber (f–k) analysis can estimate the direction of arrival (DOA) of broadband signals received on a vertical array. When the vertical array configuration is sparse, it results in an aliasing error due to spatial sampling; thus, several ...
Kim D, Byun G, Kim J.
europepmc   +2 more sources

A matlab-based modelling to study and enhance the performance of photovoltaic panel configurations during partial shading conditions

open access: yesFrontiers in Energy Research, 2023
Introduction: The utilization of solar energy in large-scale photovoltaic arrays has gained immense popularity on a global scale. However, shadows in the array lead to significant reductions in power output and create multiple power peaks in the P-V ...
Sadaquat Ali   +13 more
doaj   +1 more source

Generalized coprime array configurations [PDF]

open access: yes2014 IEEE 8th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2014
A coprime array consists of two uniform linear subarrays that construct an effective difference co-array with certain desirable characteristics. In this paper, we propose a generalized coprime array concept through the compression of the interelement spacing of one constituting subarray.
Si Qin, Yimin D. Zhang, Moeness G. Amin
openaire   +1 more source

Modeling and performance analysis of novel quad‐tied PV array configuration under partial shading conditions

open access: yesEnergy Science & Engineering, 2023
A photovoltaic (PV) cell is the smallest unit in an array that exhibits nonlinear characteristic curves. To gather the maximum amount of energy from a PV array under partial shading conditions (PSCs), it is necessary to follow the largest peak in the ...
Pallavi Verma   +5 more
doaj   +1 more source

Design and Implementation of a Composite Array Resistivity Data Logger for High-Resolution 2D Inversion Modeling

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
The use of resistivity meters to model subsurface conditions is widespread. However, commercial instruments are mostly limited to conventional configurations, such as Wenner, Schlumberger, and dipole-dipole.
A. Bahrul Hidayah   +4 more
doaj   +1 more source

Optimal antenna configurations for the BIMA Array [PDF]

open access: yesInternational Astronomical Union Colloquium, 1991
AbstractWe attempt to determine optimal configurations of six antennas for the proposed Berkeley Illinois Maryland Array. The instrumental response is used as a performance measure. A two dimensional sine function is chosen as the ideal beam, supported by theoretical considerations.
Thatte, N, Welch, W
openaire   +2 more sources

An Immunosensor for the Detection of ULBP2 Biomarker

open access: yesMicromachines, 2020
Pancreatic cancer (PC) is a global health problem that features a very high mortality rate. The UL16 binding protein 2 (ULBP2) is a new biomarker for PC detection.
Wen-Chi Yang   +8 more
doaj   +1 more source

Enhancing Gain Through Optimal Antenna Element Distribution in a Thinned Array Configuration

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
This paper presents an array thinning approach for a 25-element antenna array arranged in a $5\times5$ grid at 5.4 GHz. Our goal is to eliminate a maximum number of antenna elements with minor gain loss and hence reduce the array size, weight, cost ...
Michael Ortiz   +3 more
doaj   +1 more source

Optimal Solar Array Configuration for Multiple Shade Patterns

open access: yes, 2023
The Renewable Energy Sources (RES) participating in the stable and reliable grid operation is increasing exponentially. Solar PV has a major contribution to the increased grid integration of RES. Optimal output should be obtained from the connected solar
Mangipudi, M   +3 more
core   +1 more source

Performance Evaluation of Static PV Array Configurations for Mitigating Mismatch Losses

open access: yesIEEE Access, 2023
Solar photovoltaic (PV) systems are susceptible to power loss caused by environmental factors such as partial shading and temperature changes. To address this issue, PV modules are connected in array configurations. However, these configurations can lead
S. Devakirubakaran   +3 more
doaj   +1 more source

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