Frequency-wavenumber array processing
نویسنده
چکیده
Most array signal processing systems u e delay-and-sum beamforming to estimate source bearings. This paper demonstrates the close relationship between beamforming and frequency-wavenumber spectrum analysis. The latter approach as computational dvantages over beamforming when the noise is spatially correlated. The wavenumber approach is used to'derive the array response of a general inear or planar array to plane wave signals. The statistical properties of the maximum-likelihood estimators of source bearing and amplitude are presented for an array with many elements. Optimal array design is also discussed.
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