论述磁性无损检测新技术中磁电信号的放大、时空域滤波等模拟信号处理技术和等空间间隔、等时间间隔以及时空域混合采样方法。介绍数字信号的预处理方法、信号特征量和信号的定量解释方法。 This paper discusses the amplification of magnetic and electrical signals, the analog signal processing techniques such as spatio-temporal filtering in the new magnetic non-destructive testing technology and the equal-time, equal-time and spatial-temporal hybrid sampling methods. Describes the digital signal preprocessing methods, signal features and quantitative methods of signal interpretation.