Wh. Cho et Yb. Ahn, MULTI-ORDER SAMPLING FOR DIGITAL BEAMFORMING OF WIDE-BAND SIGNALS, IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 43(3), 1996, pp. 495-499
After proving that the second-order sampling method introduces too muc
h error for beamforming of the wide-hand signal generally used in ultr
asound imaging systems, we suggest a new multi-order sampling method t
hat significantly reduces sampling error but maintains advantages of t
he second-order sampling method with relatively simple hardware.