Results 21 to 30 of about 269,186 (284)

3D Coprime Arrays in Sparse Sensing [PDF]

open access: yesICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019
Coprime arrays are a class of sensor arrays that play a crucial role in various signal processing tasks because of their desirable properties such as sparsity and increased degrees of freedom (DOF) of coarrays. In this contribution, a new class of three-dimensional (3D) arrays is constructed from pure cubic fields.
Li, C, Gan, L, Ling, C
openaire   +2 more sources

Nonparametric empirical Bayes and compound decision approaches to estimation of a high-dimensional vector of normal means [PDF]

open access: yes, 2009
We consider the classical problem of estimating a vector $\bolds{\mu}=(\mu_1,...,\mu_n)$ based on independent observations $Y_i\sim N(\mu_i,1)$, $i=1,...,n$. Suppose $\mu_i$, $i=1,...,n$ are independent realizations from a completely unknown $G$.
Brown, Lawrence D., Greenshtein, Eitan
core   +3 more sources

Partial Angular Sparse Representation Based DOA Estimation Using Sparse Separate Nested Acoustic Vector Sensor Array

open access: yesSensors, 2018
In this paper, the issue of direction of arrival (DOA) estimation is discussed, and a partial angular sparse representation (SR)-based method using a sparse separate nested acoustic vector sensor (SSN-AVS) array is developed.
Jianfeng Li, Zheng Li, Xiaofei Zhang
doaj   +1 more source

Optimization of Sparse Cross Array Synthesis via Perturbed Convex Optimization

open access: yesSensors, 2020
Three-dimensional (3-D) imaging sonar systems require large planar arrays, which incur hardware costs. In contrast, a cross array consisting of two perpendicular linear arrays can also support 3-D imaging while dramatically reducing the number of sensors.
Boxuan Gu   +3 more
doaj   +1 more source

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

open access: yesIEEE 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   +4 more
doaj   +1 more source

Thinned coprime arrays for DOA estimation [PDF]

open access: yes, 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   +5 more
core   +2 more sources

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

open access: yesAdvanced 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

Geometry of Random Sparse Arrays

open access: yes2022 56th Asilomar Conference on Signals, Systems, and Computers, 2022
Peer ...
Hücümcnoglu, Mehmet Can   +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

open access: yesIET 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   +4 more
doaj   +1 more source

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

open access: yesJournal 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

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