MISC array: A new sparse array design achieving increased degrees of freedom and reduced mutual coupling effect

Z Zheng, WQ Wang, Y Kong… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Recently, nested and coprime arrays have attracted considerable interest due to their
capability of providing increased array aperture, enhanced degrees of freedom (DOFs), and …

Novel sparse array design based on the maximum inter-element spacing criterion

W Shi, Y Li, RC De Lamare - IEEE Signal Processing Letters, 2022 - ieeexplore.ieee.org
A novel sparse array (SA) structure is proposed based on the maximum inter-element
spacing (IES) constraint (MISC) criterion. Compared with the traditional MISC array, the …

Generalized non-redundant sparse array designs

A Ahmed, YD Zhang - IEEE Transactions on Signal Processing, 2021 - ieeexplore.ieee.org
We present novel generalized non-redundant sparse array design strategies that achieve
the highest possible number of degrees-of-freedom (DOFs) for direction-of-arrival (DOA) …

Improved nested array with hole‐free DCA and more degrees of freedom

M Yang, L Sun, X Yuan, B Chen - Electronics Letters, 2016 - Wiley Online Library
A new linear sparse array based on the nested array is proposed, which enjoys all the good
properties of the two‐level nested array, and can provide more degrees of freedom (DOF) …

ULA fitting for sparse array design

W Shi, SA Vorobyov, Y Li - IEEE Transactions on Signal …, 2021 - ieeexplore.ieee.org
Existing sparse array (SA) geometries, such as coprime and nested arrays, can be regarded
as a concatenation of two uniform linear arrays (ULAs). Such arrays lead to a significant …

Enhanced nested array configuration with hole-free co-array and increasing degrees of freedom for DOA estimation

P Zhao, G Hu, Z Qu, L Wang - IEEE Communications Letters, 2019 - ieeexplore.ieee.org
In this letter, we propose an enhanced nested array (ENA) configuration consisting of two
uniform linear arrays (ULAs) with different separations and an additional sensor, whose …

Enhanced and generalized coprime array for direction of arrival estimation

J Shi, F Wen, Y Liu, Z Liu, P Hu - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Owing to the large degrees of freedom and reduced mutual coupling by generating
difference coarrays, nonuniform linear arrays have aroused great interest in direction of …

Thinned coprime array for second-order difference co-array generation with reduced mutual coupling

A Raza, W Liu, Q Shen - IEEE Transactions on Signal …, 2019 - ieeexplore.ieee.org
In this work, we present a new coprime array structure termed thinned coprime array (TCA),
which exploits the redundancy in the structure of existing coprime array and achieves the …

Extension of co-prime arrays based on the fourth-order difference co-array concept

Q Shen, W Liu, W Cui, S Wu - IEEE Signal Processing Letters, 2016 - ieeexplore.ieee.org
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 …

Sparse symmetric linear arrays with low redundancy and a contiguous sum co-array

R Rajamäki, V Koivunen - IEEE Transactions on Signal …, 2021 - ieeexplore.ieee.org
Sparse arrays can resolve significantly more scatterers or sources than sensor by utilizing
the co-array-a virtual array structure consisting of pairwise differences or sums of sensor …