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瞬变电磁测量过程中有效信号为二次感应场,对于噪声干扰、背景信号弱等因素,对探测的效果有很大的影响.野外采集数据过程中干扰信号的类型是多样的.本文主要采用线性最小二乘拟合、小波变换法、多点平均法、傅里叶变换法对于不同类型的干扰信号进行分类对比,对将来的野外数据处理采用哪种滤波方法有很好的指导意义.
The effective signal in transient electromagnetic measurement process is secondary induced field, which has a great influence on the effect of detection due to noise interference and weak background signal.The types of interfering signals in the process of field data acquisition are varied.This paper mainly uses Linear least squares fitting, wavelet transform, multi-point average method, Fourier transform method for different types of interference signal classification comparison, the future of field data processing using what kind of filtering method has a good guiding significance.