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http://dx.doi.org/10.5573/ieie.2017.54.3.78

Hidden Object Detection System using Parametric Array  

Lee, Kibae (Department of Ocean System Engineering, Jeju National University)
Lee, Jaeil (Hanwha Co. Ltd.)
Bae, Jinho (Department of Ocean System Engineering, Jeju National University)
Lee, Chong Hyun (Department of Ocean System Engineering, Jeju National University)
Cho, Jung Hong (Hanwha Co. Ltd.)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.54, no.3, 2017 , pp. 78-86 More about this Journal
Abstract
In this paper, we propose hidden object detection system using parametric array based on acoustic signal that is harmless to human body. A transmit signal of the proposed detection system uses a high directive chirp signal generated from parametric array phenomenon, which uses technique to improve a signal to noise (SNR) of a received signal and a distance resolution trough the dechirp processing. The transmit sensor array is constructed as $8{\times}2$ and has a horizontal beam width of $7^{\circ}$ and vertical beam width of $26^{\circ}$. To verify the detection and visualization of the proposed system, a 2-axis driving control system based on linear stage was constructed, and A-scan, B-scan, and C-scan experiments was addressed for hidden object. From experimental results, we detected and visualized the hidden bronze plate and pipe by cloth and the visualized shapes was confirmed. Especially, the obtained errors was $0.015m^2$ for bronze plate, and $0.046m^2$ for pipe.
Keywords
Acoustic signal; Parametric array; Chirp signal; Hidden object detection;
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Times Cited By KSCI : 4  (Citation Analysis)
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