Inspec keywords: set theory; array signal processing; electromagnetic wave scattering; vectors

Other keywords: adaptive array beamforming theory framework; far-field direct-path signal; uncertainty set; near-field signal; near-field steering vector; near-field scattering problem; near-field scattering effect; unknown scattering coefficients; near-field scatterers; antenna measurement; far-field steering vector; robust adaptive beamforming approach

Subjects: Electromagnetic wave propagation; Algebra; Signal processing theory; Signal processing and detection; Combinatorial mathematics; Algebra; Combinatorial mathematics