【摘要】 目的:探索一种投影初始化无限冲激响应(IIR)壁滤波器的设计以及其在现场可编辑门阵列(FPGA)平台上的实现。方法:首先,利用矩阵实验室(Matlab)矩阵运算的优势,进行算法的仿真,通过对仿真结果的分析,初步评估该算法的有效性;其次,将算法进行理论上的优化,以使其能满足在硬件上运行的可行性;最后,根据现场可编辑门阵列(FPGA)的结构特点以及该算法的运算特点,提出了一种硬件运算结构来实现该滤波器算法。结果:这种投影初始化无限冲激响应(IIR)壁滤波器能充分利用可编辑门阵列(FPGA)并行运算的特点提高运算效率,并能有效的抑制人体内反射回来的杂波信号,提取出了血流的多普勒频移。结论:投影初始化无限冲激响应(IIR)壁滤波器在现场可编辑门阵列(FPGA)里得到了实现。更多还原

【Abstract】 Objective: To investigate the effect of a projection-initialized infinite impulse response(IIR) wall filter designed on the FPGA platform.Methods: First,this algorithm was simulated and evaluated by using Matlab.Second,according to the structural features of FPGA,a hardware computing architecture was proposed to implement this filter algorithm.Results: This projection-initialized infinite impulse response(IIR) wall filter can suppress clutter signal effectively,and can extract the blood Doppler frequency shift.Conclusion: The projection-initialized infinite impulse response(IIR) wall filter can be realized in FPGA.更多还原