Results 31 to 40 of about 272,983 (328)

Fast Underdetermined DOA Estimation Based on Generalized MRA via Original Covariance Vector Sparse Reconstruction

IEEE Access, 2021
Minimum redundancy array (MRA) has the maximum aperture with continuous difference co-array among various sparse arrays with same number of physical sensors, but it is hard to calculate the sensor position of MRA and realize array design by using MRA. To
Geng Wang, Minghao He, Chunlai Yu, Jun Han, Changxiao Chen   +4 more
doaj   +1 more source

Efficient computation of Hamiltonian matrix elements between non-orthogonal Slater determinants [PDF]

, 2012
We present an efficient numerical method for computing Hamiltonian matrix elements between non-orthogonal Slater determinants, focusing on the most time-consuming component of the calculation that involves a sparse array.
Bender, Bender, Bohr, Dongarra, Dongarra, Dongarra, Dongarra, Griffin, Hill, Koch, Lawson, Morgon, Noritaka Shimizu, Otsuka, Puddu, Ring, Robledo, Sabbey, Sarkar, Schmid, Scuseria, Shimizu, Takaharu Otsuka, Takashi Abe, Thouless, Tomita, Wadleigh, Wick, Yutaka Utsuno   +28 more
core   +2 more sources

Geometry of Random Sparse Arrays

2022 56th Asilomar Conference on Signals, Systems, and Computers, 2022
Peer ...
Hücümcnoglu, Mehmet Can, Rajamäki, Robin, Pal, Piya   +3 more
openaire   +2 more sources

Fast direction of arrival estimation method for ultra‐high voltage converter valve insulation board partial discharge based on a sparse array

IET Science, Measurement & Technology, 2022
An insulation board is an important insulator used between damping capacitors in a converter valve. The potential creeping discharge phenomenon on the insulation board will affect the insulation between the damping capacitors and even the safe operation ...
Yunpeng Liu, Jiashuo Liu, Tingyu Lai, Xiaoguang Wei, Shaotong Pei   +4 more
doaj   +1 more source

Thinned coprime arrays for DOA estimation [PDF]

, 2017
Sparse arrays can generate a larger aperture than traditional uniform linear arrays (ULA) and offer enhanced degrees-of-freedom (DOFs) which can be exploited in both beamforming and direction-of-arrival (DOA) estimation. One class of sparse arrays is the
grant, piya, piya, shen, vaidyanathan, van trees   +5 more
core   +2 more sources

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

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, Aodah Diamah, Pitoyo Yuliatmojo, Baso Maruddani   +3 more
doaj   +1 more source

High-resolution Direction of Arrival Estimation Method Based on Sparse Arrays with Minimum Number of Elements

Journal of Telecommunications and Information Technology, 2021
Regular fully filled antenna arrays have been widely used in direction of arrival (DOA) estimation. However, practical implementation of these arrays is rather complex and their resolutions are limited to the beamwidth of the array pattern.
Jafar Ramadhan Mohammed
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.
core   +1 more source

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
core   +1 more source