A new algorithm computes multiple broadband beams from array sensors with near-linear scaling in array size by encoding samples with a non-uniform Fourier transform and solving small structured systems per beam.
Multibeam Digital Array Receiver Using a 16-Point Multiplierless DFT Approximation,
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A Fast Broadband Beamspace Transformation
A new algorithm computes multiple broadband beams from array sensors with near-linear scaling in array size by encoding samples with a non-uniform Fourier transform and solving small structured systems per beam.