HAWC High Energy Upgrade with a Sparse Array [PDF]
, 2017 The High Altitude Water Cherenkov (HAWC) gamma-ray observatory has been fully operational since March 2015. To improve its sensitivity at the highest energies, it is being upgraded with an additional sparse array called outrigger array.
Joshi, Vikas
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Iterative Weighted l1 Norm Constraint for Direction-of-Arrival Estimation with Sparse Coprime Array [PDF]
Jisuanji gongcheng, 2017 The sparse coprime array with determined elements can increase the array aperture.In order to make full use of the coprime relationship of the array to form differential coprime synthetic array with more degrees of freedom,this paper exploits the method ...
LIU Qinghua,ZHOU Xiuqing
doaj +1 more source
Extension of Co-Prime Arrays Based on the Fourth-Order Difference Co-Array Concept [PDF]
, 2016 An effective sparse array extension method for maximizing the number of consecutive lags in the fourth-order difference co-array is proposed, leading to a novel enhanced sparse array structure based on co-prime arrays (CPAs) with significantly increased ...
Cui, W., Liu, W., Shen, Q., Wu, S.
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Sparse Active Rectangular Array with Few Closely Spaced Elements
, 2018 Sparse sensor arrays offer a cost effective alternative to uniform arrays. By utilizing the co-array, a sparse array can match the performance of a filled array, despite having significantly fewer sensors.
Koivunen, Visa, Rajamäki, Robin
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Geometrically-Inspired Sparse MIMO Array Design for Enhanced mm-Wave Near-Field Imaging
IEEE AccessIn this paper, an efficient method of sparse MIMO array design is proposed to enhance the millimeter-wave near-field imaging by utilizing the geometric properties of the virtual array with uniform coverage of two-dimensional aperture and the minimal ...
Li Ding +4 more
doaj +1 more source
Robust sparse image reconstruction of radio interferometric observations with purify [PDF]
, 2016 Next-generation radio interferometers, such as the Square Kilometre Array (SKA), will revolutionise our understanding of the universe through their unprecedented sensitivity and resolution.
Carrillo, Rafael E. +5 more
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Design and Experiment of Multi-resolution Composite Digital Array Antenna
Leida xuebao, 2016 Because a sparse array has the advantages of a simplified structure and reduced cost in a radar system, radar technology based on the sparse array has gained widespread attention.
Tang Yue, Mao Tian, Jiang Bing
doaj +1 more source
A Proposed Design Method for Sparse Array Antenna by Using the Spacing Coefficient Algorithm
Applied Computational Intelligence and Soft Computing, 2022 One of the major challenges in developing various practical communication systems is reducing device complexity and development costs. In this study, a linear sparse array antenna design problem is addressed and a new approach for density taper element ...
Efri Sandi +3 more
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HAWC Upgrade for Multi-TeV {\gamma}-ray Detection
, 2016 The High Altitude Water Cherenkov (HAWC) high-energy {\gamma}-ray observatory was completed in march 2015 in central Mexico. The detector, consisting of 300 water tanks, is currently being upgraded to improve its performance at Multi-TeV energies, with a
Jardin-Blicq, Armelle, Joshi, Vikas
core +1 more source
Stochastic framework for evaluating the effect of displaced antenna elements on DOA estimation [PDF]
, 2017 We establish a statistical framework for investigating the influence of correlated random displacements of antenna elements in a uniform circular antenna array (UCA) on the distribution of direction-of-arrival (DOA) estimates. More specifically, we apply
Bruneel, Herwig +5 more
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