首页|Fast characterization for UXO-like targets with a portable transient electromagnetic system
Fast characterization for UXO-like targets with a portable transient electromagnetic system
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NSTL
Elsevier
When detecting an underground target with a portable transient electromagnetic system, the system excites and records digitized data on a 5 x 5 or 7 x 7 grid above the target, and with the positioning system to accurately record the sensor positions, which makes the detection more complex and less efficient. To simplify the detection process, a novel three-position measurement method without positioning system is proposed to estimate the target characteristics. First, a new forward model based on the relative position is established, and the relative position is estimated by differential evolution algorithm at each measurement. Then, the proposed method is optimized to quickly and precisely characterize the target. Results show that the horizontal and depth errors are less than 5 and 9 cm, respectively. The proposed method takes about 28.4 s to characterize the target, only 11% of the traditional one, which substantially improves the detection efficiency and flexibility of the portable sensor.
NSTL
Elsevier
