Research on tensor localization of finite conductors based on portable transient electromagnetic detection

In this article, tensor technology is applied to address the issue of slow speed in target positioning for near-surface finite conductors with a transient electromagnetic (TEM) system. Both simulation and experiment have been conducted based on a portable TEM system. Simulation results show that the tensor localization is more accurate when the baseline distance is smaller and the target depth is larger. Experiment results show that with a baseline distance of 40 cm and a target depth of 50 cm, the horizontal positioning error does not exceed 7 cm and the depth error does not exceed 6 cm after compensation when taking the average of positioning results of 25 measurement points. As a result, tensor localization can achieve accurate target localization for TEM detection.