Abstract:We proposed a reduction method of the computational cost for the minimum variance (MV) adaptive beamforming. In the method, a receiving aperture was divided into several sub-apertures, and outputs of the delay-and-sum (DAS) beamformer in the divided sub-apertures were used as inputs of the MV beamformer. Lateral resolutions were evaluated under different division number, distances between sub-apertures, and their overlapping ratios in sub-aperture averaging. As a result, the resolution was improved by 44.3% co… Show more
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