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Off-Grid Point-Scatterer Localization from Sparse Limited-Aperture Data via Hankel Completion
We study the localization of $s$ distinct planar point scatterers from sparsely sampled single-incidence, single-frequency acoustic far-field data over a limited receiver aperture. Under the first Born approximation, the coherent data form a two-dimensional off-grid exponential sum and admit a low-r
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