De-noising method for electromagnetic interference field test signal

The invention provides a de-noising method for an electromagnetic interference field test signal. The de-noising method comprises a mode I and a mode II, during processing, one of the mode I and the mode II processes the electromagnetic interference test signal to obtain a signal I, and then the other one continues to process the signal I; the first mode is used for removing periodic narrow-band components in noise, and the second mode is used for removing random components in field noise; the denoising method for the electromagnetic interference field test signal has the advantages that the periodic narrow-band component and the random component in the field noise can be denoised in a targeted mode, useful signals can be prevented from being damaged while the noise is eliminated, and the field denoising effect is improved. 本发明提出了一种电磁干扰现场测试信号的消噪方法，所述消噪方法包括模式一和模式二；处理时，先由模式一和模式二中的一者对电磁干扰测试信号进行处理，得到信号一，然后再由另一者继续对信号一进行处理；模式一用于去除噪声中的周期性窄带成分，模式二用于去除现场噪声中的随机性成分；本发明的有益技术效果是：提出了一种电磁干扰现场测试信号的消噪方法，该方法能分别对现场噪声中的周期性窄带成分与随