Identification and Suppression for Interference on Frequecy-Domain Electromagnetic Sounding
This article focuses on the electromagnetic interference(EMI)of high-voltage lines in frequency-domain electromagnetic sounding,the characteristics and identification technology of horizontal electric field interference caused by linear interference source are analyzed from two aspects of method principle and field measured data.A method of suppressing electromagnetic interference by using interference-estimated filtering technology is proposed.The application results show that the interference of linear electromagnetic interference sources such as high-voltage lines on the electric field is mainly reflected in the horizontal electric field parallel to the direction of the interference source.In the field,the signal-to-noise ratio of the data can be improved by arranging the measurement lines perpendicular to the high-voltage line.Indoor electromagnetic interference is suppressed by interference-estimated filtering technology.
NETL
NSTL
万方数据
