Title :
Multi-order sampling for digital beamforming of wide-band signals
Author :
Cho, Weon-Hee ; Ahn, Young Bok
Author_Institution :
Dept. of Electron. Eng., Kon-Kuk Univ., Seoul, South Korea
fDate :
5/1/1996 12:00:00 AM
Abstract :
After proving that the second-order sampling method introduces too much error for beamforming of the wide-band signal generally used in ultrasound imaging systems, we suggest a new multi-order sampling method that significantly reduces sampling error but maintains advantages of the second-order sampling method with relatively simple hardware.
Keywords :
acoustic signal processing; array signal processing; band-pass filters; error analysis; interpolation; signal sampling; SNR; bandpass filter; computer simulation; digital beamforming; envelope detection; error reduction; interpolation; multiorder sampling; quadrature components; sampled delay focusing; sampling error; third-order sampling; time-domain implementation; ultrasound imaging; wideband signals; Array signal processing; Circuits; Delay; Envelope detectors; Error analysis; Focusing; Hardware; Sampling methods; Ultra wideband technology; Ultrasonic imaging;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
