为减少采样数据和采样频率，文中考虑将有限新息率( FRI) 模型应用于工业超声波成像系统中，但现有的 FRI 模型并不能很好地应用于反射信号频率很高的工业超声波成像系统．为此，文中基于 FRI 滤波器组，提出了一种适用于工业超声信号处理的新型FRI 采集方法——辛格函数之和( SoS 滤波器) 法，推导了该方法应具备的条件，并给出了SoS 滤波器的构造方式．采用该方法对一维超声波成像原始数据进行处理，结果表明文中所提出的采集方法是有效、可行的．

Although the FRI (Finite Rate of Innovation) model may be feasible in reducing the sampling data andsampling frequency of industrial ultrasound imaging systems,the existing FRI model cannot be well applied due tothe high frequency of reflected signals.In order to solve this problem,a new FRI acquisition method named Sum of Sinc (SoS) filter,which is very suitable for the processing of industrial ultrasound signals,is proposed on the basisof the FRI filter group.Afterwards，the necessary conditions for this method are deduced,and the structure of theSoS filter is presented.From the results of raw one- dimension ultrasound imaging data，the proposed method isfound to be effective and feasible.