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脉冲噪声是超声波自动探伤中的主要干扰信号。本文首先分析了其来源和特征，并通过傅里叶变换进行频谱分析。在此基础上，介绍几种实用的消除脉冲干扰噪声影响的方法。
Impulsive noise is the main interference signal in ultrasonic automatic flaw detection. This paper first analyzes its source and characteristics, and carries out spectrum analysis by Fourier transform. On this basis, introduce several practical methods to eliminate the influence of impulsive noise.