Results 241 to 250 of about 933,433 (278)
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IEEE Transactions on Information Theory
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Verónica Becher, Olivier Carton
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Verónica Becher, Olivier Carton
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Nested Array Processing for Distributed Sources
IEEE Signal Processing Letters, 2014We consider the problem of using linear nested arrays to estimate the directions of arrival (DOAs) of distributed sources and to detect the source number, where we have more sources than actual physical sensors. Angular spread, caused by the multipath nature of the distributed sources, makes the commonly used point-source assumption challenging.
Keyong Han, Arye Nehorai
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Improved array weighting for short nested arrays
The Journal of the Acoustical Society of America, 2019Often linear acoustic arrays are comprised of shorter nested subcomponent arrays cut for higher frequencies. This reduces costs and complexity by trading-off performance, specifically in resolution, SNR, and grating lobes. Typically each sub-aperture is processed individually, and the results incoherently combined over a frequency bandwidth of interest.
Geoffrey F. Edelmann +1 more
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Augmented Multi-Subarray Dilated Nested Array With Enhanced Degrees of Freedom and Reduced Mutual Coupling [PDF]
IEEE Transactions on Signal ProcessingSparse linear arrays (SLAs) can be designed in a systematic way, with the ability for underdetermined DOA estimation where a greater number of sources can be detected than that of sensors.
Gang Wang, Hua Chen, Qing Shen
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Calibrating Nested Sensor Arrays With Model Errors
IEEE Transactions on Antennas and Propagation, 2014We consider the problem of direction of arrival (DOA) estimation based on a nonuniform linear nested array, which is known to provide $O(N^2)$ degrees of freedom (DOFs) using only $N$ sensors. Both subspace-based and sparsity-based algorithms require certain modeling assumptions, e.g., exactly known array geometry, including sensor gain and ...
Keyong Han, Peng Yang 0006, Arye Nehorai
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Transmit Subaperturing for MIMO Radars With Nested Arrays [PDF]
Signal Processing, 2017 Abstract We consider a multiple-input multiple-output (MIMO) radar equipped with a colocated nested array for both transmit and receive. A novel transmit subaperturing (TS) approach that decomposes the nested array into unequal subarrays is proposed to take the advantage of the degrees of freedom (DOF) provided by the nested array but without ...
Hongbin Li, Linlin Mao, Qunfei Zhang
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Nested Arrays: A Novel Approach to Array Processing With Enhanced Degrees of Freedom [PDF]
IEEE Transactions on Signal Processing, 2010 A new array geometry, which is capable of significantly increasing the degrees of freedom of linear arrays, is proposed. This structure is obtained by systematically nesting two or more uniform linear arrays and can provide O(N2) degrees of freedom using only N physical sensors when the second-order statistics of the received data is used.
Piya Pal, Palghat Vaidyanathan
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ACM SIGAPL APL Quote Quad, 1992
Following the new direction taken by the ISO Standards Committee meeting in Palo Alto, during August, 1991, an extended APL standard is considered using a nested array basis with particular features from IBM's APL2 program product. APL2 develops from ISO APL with the relaxation of two early scalar constraints.
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Following the new direction taken by the ISO Standards Committee meeting in Palo Alto, during August, 1991, an extended APL standard is considered using a nested array basis with particular features from IBM's APL2 program product. APL2 develops from ISO APL with the relaxation of two early scalar constraints.
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A Novel Nested Array for Real-Valued Sources Exploiting Array Motion
IEEE Signal Processing Letters, 2021In this letter, a novel nested array is proposed which not only increases the degrees of freedom (DOF) but also reduces the mutual coupling that occurs in the general nested array structure by moving the original array only half wavelength. Here we deal with real-valued sources like AM or BPSK whereby we can explore the property of the sum coarray ...
Rajen Kumar Patra, Anindya Sundar Dhar
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Bounds for asymmetric nested orthogonal arrays
Discrete MathematicsThe paper explores nested orthogonal arrays (NOAs), which are widely used in statistical experiments and fractional factorial designs when different factors require different numbers of levels. It addresses the core problem of determining minimal sizes (i.e., the smallest possible number of runs) for constructing such NOAs, under asymmetry constraints (
Xiao Lin, Shanqi Pang, Guangzhou Chen
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