| The Air Electric Field Magneto-Telluric Method(AEMT)uses a capacitive electric field sensor to replace the ground electrode for electric field measurement,avoiding the difficulty of burying the ground electrode,and greatly improving the efficiency of field work.Based on the analysis of the principle of AEMT,this paper carried out the research on the factors affecting the performance of electric field sensor,and successfully developed a stable electric field three-component sensor,which laid the foundation for the vertical electric field of the AEMT method;the electric field signal of the three-component electric field sensor was analyzed through experiments.In-depth research on the data processing of the AEMT method was carried out,and the electric field data measured by the capacitance sensor was corrected;the AEMT impedance estimation was carried out based on the least square and Robust method;the AEMT finite element forward algorithm based on the secondary field algorithm was developed,and The AEMT regularization inversion program under the condition of limited memory was developed on the basis of forward performance,and the correctness of the research and development algorithm was verified through theoretical simulation and field experiments.The research work applied the developed algorithm to the actual measurement data processing in a certain area of Shangrao,Jiangxi,and carried out the comparison of AMT and AEMT measurement,and achieved relatively ideal results. |
