Results 21 to 30 of about 52,671 (258)

Bounds for sparse planar and volume arrays [PDF]

IEEE Transactions on Information Theory, 2001
Summary: This correspondence improves and extends bounds on the numbers of sensors, redundancies, and holes for sparse linear arrays to sparse planar and volume arrays. As an application, the efficiency of regular planar and volume arrays with redundancies, but no holes, is deduced.
Yann Meurisse, Jean Pierre Delmas
openaire   +2 more sources

A Hybrid Technique Using Combinatorial Cyclic Difference Sets and Binomial Amplitude Tapering for Linear Sparse Array Antenna Design

Advanced Electromagnetics, 2016
Reducing system complexity and cost in synthesizing a sparse array antenna design is a challenging task for practical communication systems, such as radar systems and space communication.
E. Sandi, F. Y. Zulkifli, E. T. Rahardjo
doaj   +1 more source

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

Detecting novel genes with sparse arrays [PDF]

Gene, 2010
Species-specific genes play an important role in defining the phenotype of an organism. However, current gene prediction methods can only efficiently find genes that share features such as sequence similarity or general sequence characteristics with previously known genes.
Haiminen, Niina, Smit, Bart, Rautio, Jari, Vitikainen, Marika, Wiebe, Marilyn, Martinez, Diego, Chee, Christine, Kunkel, Joe, Sanchez, Charles, Nelson, Mary Anne, Pakula, Tiina, Saloheimo, Markku, Penttilä, Merja, Kivioja, Teemu, Arvas, Mikko   +15 more
openaire   +2 more sources

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

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

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

Passive localisation of mixed near‐field and far‐field signals using the transformed symmetric nested array

IET Radar, Sonar & Navigation, 2023
Direction of arrival (DOA) estimation of mixed near‐field (NF) and far‐field (FF) signals is one of the key issues in the study of array signal processing. For more precise localisation performance, sparse arrays have drawn the attention of an increasing
Bo Du, WeiJia Cui, Jianhui Wang, Bin Ba, Yinsheng Wang   +4 more
doaj   +1 more source

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

Geometrically-Inspired Sparse MIMO Array Design for Enhanced mm-Wave Near-Field Imaging

IEEE Access
In 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, Wenlong Yang, Gaoming Tang, Haipo Cui, Ping Li   +4 more
doaj   +1 more source