Aiming at localization needs of different shapes of near-ground surface metal targets,an underground metal target localization system based on transient electromagnetic(TEM)array technology is designed.The system uses the difference of the induced electromotive force attenuation curve collected by each receiving coil of the array sensor to obtain the signal response characteristics of the underground target.By comparing the induced electromotive force amplitude of the label signal in the measured environment,the horizontal orientation and vertical buried depth of the target can be obtained,and the positioning function of the underground metal target can be realized.The experimental results show that the designed system can distinguish the horizontal orientation of spherical,rectangular and cylindrical targets,and the measurement error of vertical buried depth is less than 8%,which can achieve a better positioning effect.
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