Abstract 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 spatially-colocated p-u probe and a spatially-orthogonal dipole/loop pair, to solve angle ambiguities caused by aperture extension.

中文翻译：

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用于高精度角度估计的具有孔径扩展的稀疏嵌套阵列

摘要 稀疏嵌套阵列 (SNA) 用于高精度角度估计。如果嵌套阵列的第一级传感器间距扩展到半波长以上，则嵌套阵列是稀疏的。每个阵列网格都配备了相同的双分量子阵列，例如半波长间隔双峰、空间共置 pu 探针和空间正交偶极子/环对，以解决由孔径扩展引起的角度模糊。