In order to make AEMT measurement more standardized

the indoor and outdoor calibration of AEMT capacitance sensor is studied. The data measured by capacitance sensor is converted into the data measured by grounding electrode. The influencing factors of calibration experiment are studied by comparing the data. The preliminary conclusion is obtained by comparing the data. The influencing factors are internal and external factors because of the two factors

in the indoor and outdoor comparative grouping experiments

the influencing factors can be attributed to the outdoor frequency interference and the spacing of capacitor plates. In the future

AEMT method should pay attention to avoid the influence factors

so as to improve the accuracy.