Beamforming apparatus ultrasonic imaging apparatus and beamforming method capable of simple spatial smoothing operation

摘要

Disclosed are a beamforming apparatus, an ultrasonic imaging apparatus, and a beamforming method with a simple spatial smoothing operation. The beamforming apparatus according to an embodiment of the present invention converts a received signal into another space using a transform function composed of low frequency components and calculates and averages the converted signal through a spatial smoothing operation using the transform function in transform space. A spatial smoothing unit estimating a spatial covariance matrix, a weighting unit calculating a transform signal weight from the averaged spatial covariance matrix estimated through a spatial smoothing operation, and a synthesis unit generating a beam signal using the transform signal and the transform signal weights Include.