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Sparse nested array with aperture extension for high accuracy angle estimation
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DOI：10.1016/j.sigpro.2020.107700.png)
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Abstract
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Sparse nested arrays (SNAs) are presented for highly accurate angle estimation. A nested array is sparse if its sensor-spacing of the first level is extended beyond a half-wavelength. Each array grid is equipped with an identical two-component subarray, such as a half-wavelength spaced doublet, a spatiallycolocated p-u probe and a spatially-orthogonal dipole/loop pair, to solve angle ambiguities caused by aperture extension. (C) 2020 Elsevier B.V. All rights reserved.
Keywords:
Nested array
Sparse array
Angle estimation
Aperture extension
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