基于现场可编程门阵列（FPGA）的高频超声脉冲波多普勒的设计与实现
Design and implementation of high frequency ultrasound pulsed-wave Doppler using FPGA.
作者信息
Hu Chang-hong, Zhou Qifa, Shung K Kirk
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 2008 Sep;55(9):2109-11. doi: 10.1109/TUFFC.904.
Abstract
The development of a field-programmable gate array (FPGA)-based pulsed-wave Doppler processing approach in pure digital domain is reported in this paper. After the ultrasound signals are digitized, directional Doppler frequency shifts are obtained with a digital-down converter followed by a low-pass filter. A Doppler spectrum is then calculated using the complex fast Fourier transform core inside the FPGA. In this approach, a pulsed-wave Doppler implementation core with reconfigurable and real-time processing capability is achieved.
摘要
本文报道了一种基于现场可编程门阵列（FPGA）的纯数字域脉冲波多普勒处理方法的开发。超声信号数字化后，通过数字下变频器和低通滤波器获得定向多普勒频移。然后使用FPGA内部的复数快速傅里叶变换核计算多普勒频谱。通过这种方法，实现了具有可重构和实时处理能力的脉冲波多普勒实现核。
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