Results 31 to 40 of about 35,003 (279)
A Novel Sparse Array for Localization of Mixed Near-Field and Far-Field Sources
International Journal of Antennas and Propagation, 2021 As we all know, nested array can obtain a larger array aperture and more degrees of freedom using fewer sensors. In this study, we not only designed an enhanced symmetric nested array (ESNA), which achieved more consecutive lags and more unique lags ...
Yinsheng Wang +4 more
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DOA Estimation Using Fourth-Order Cumulants in Nested Arrays with Structured Imperfections
Sensors, 2020 Recently developed super nested array families have drawn much attention owing to their merits on keeping the benefits of the standard nested arrays while further mitigating coupling in dense subarray portions.
Baoping Wang, Junhao Zheng
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On the existence of nested orthogonal arrays
Discrete Mathematics, 2008 An orthogonal array \(\text{OA}(N,k,s,g)\) has \(N\) rows, \(k\) columns, \(s\) symbols, and strength \(g\) if it is an \(N \times k\) array with entries from an \(s\)-set in which every possible combination of symbols appear equally often as rows in every \(N \times g\) subarray.
Rahul Mukerjee +2 more
openaire +1 more source
New Directions In Sparse Sampling and Estimation For Underdetermined Systems [PDF]
, 2013 A central objective in signal processing is to infer meaningful information from a set of measurements or data. While most signal models have an overdetermined structure (the number of unknowns less than the number of equations), traditionally very few ...
Piya Pal, Pal, Piya
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Direction of Arrival and Polarization Estimation for Nested Polarization Sensitive Array
IEEE Access, 2019 This paper presents a new polarization sensitive array composed of a two-level nested subarray and an optimally nested subarray with orthogonal oriented antennas, and then proposes a correlation matrix reconstruction based estimation method for direction
Yunlong Yang +3 more
doaj +1 more source
Nested Array-Based Spatially Coupled LDPC Codes
, 2021 Linear nested codes, where two or more sub-codes are nested in a global code, have been proposed as candidates for reliable multi-terminal communication. In this article, we consider nested array-based spatially coupled low-density parity-check (SC-LDPC)
Mitchell, David G.M. +2 more
core +1 more source
IET Radar, Sonar & Navigation, 2022 Recently, sparse linear arrays have aroused significant attention because they can provide increased degrees of freedom (DOFs) and enlarged inter‐element spacing, which are the critical factors to improve the accuracy of direction of arrival (DOA ...
Fengtong Mei +4 more
doaj +1 more source
Sensors, 2022 The features of quasi-stationary signals (QSS) are considered to be in a direct position determination (DPD) framework, and a real-valued DPD algorithm of QSS for nested arrays is proposed.
Haowei Zeng +3 more
doaj +1 more source
A virtual nested MIMO array exploiting fourth order difference coarray
, 2020 International audienceIn active direction of arrivals (DOA) sensing, themultiple-input multiple-output (MIMO) radar can lead to moredegrees of freedom (DOFs). The DOFs can be further increasedwhen the fourth order cumulants are used in MIMO. However,most
Wang, Yide, Fu, Zhe, Chargé, Pascal
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International Journal of Antennas and Propagation, 2019 Nested arrays are sparse arrays composed of subarrays with nonuniform sensor spacing. Compared with traditional uniform arrays, nested arrays have more degree of freedoms (DOFs) and larger apertures.
Tao Wu +4 more
doaj +1 more source