利用聚焦探头脉冲回波法对固体火箭发动机多界面粘接质量进行超声诊断时 ,遇到与探头标称频率相近的干扰信号 ,普通的滤波措施很难消除 ,造成超声诊断图像出现白点噪声。本文介绍一种消除这种白点噪声的特殊中值滤波方法 In the ultrasonic diagnosis of the solid rocket motor multi-interface adhesive quality by using the focused probe pulse echo method, the interference signals similar to the nominal frequency of the probe are encountered, and the common filtering measures are difficult to eliminate, resulting in white point noise in the ultrasonic diagnosis image. This article describes a special median filtering method to eliminate this white point noise