Discussion
What is the array equivalent of a window function in signal processing?
Answer: B
Both problems are the same mathematics: the pattern is the Fourier transform of the aperture distribution, so an amplitude taper plays exactly the role of a window in suppressing spectral leakage. Hamming, Taylor and Chebyshev appear in both fields for that reason. Phase shift corresponds to a frequency shift, spacing to the sampling interval and element count to the record length, so the whole analogy carries across term by term.
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