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Design and implementation of near-field, wideband synthetic aperture beamformers

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4 Author(s)
Ahmad, F. ; Villanova Univ., PA, USA ; Frazer, Gordon J. ; Kassam, S.A. ; Amin, M.G.

A coarray-based near-field, wideband synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented. While coarray techniques offer significant reduction in the number of array elements for a given angular resolution, the hybrid subarray-stepped frequency realization of wideband systems simplifies implementations and offers flexibility in beamforming. Proof of concept is provided using real data collected in an anechoic chamber for several pulse shapes and array weightings.

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Aerospace and Electronic Systems, IEEE Transactions on  (Volume:40 ,  Issue: 1 )