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Experimental study on acoustic-to-seismic landmine detection based on laser self-mixing interferometer
Author(s): Zhiqiang Wu; Naiyuan Duan; Chi Wang; Jinhui Li; Jun Zhu
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Paper Abstract

Laser self-mixing interferometer is a novel remote sensor which permits measuring micro vibration displacement of scattering targets, making it apply to noncontact detection of landmine buried in the ground. An experimental model is developed for acoustic/seismic landmine detection using a laser self-mixing interferometer to obtain the velocity variations image of the ground excited by acoustic wave. Interferometer has a noise floor due to speckle noise, thus sound pressure level should strong enough to stimulate landmine to vibrate in a mode higher than interferometer noise floor. Vibration response in frequency domain and 2D image are obtained with laser self-mixing interferometer in the field test, and results demonstrate it is feasible to detect landmine and distinguish landmine types from the shape and size of the image.

Paper Details

Date Published: 24 July 2018
PDF: 6 pages
Proc. SPIE 10827, Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018), 108271W (24 July 2018); doi: 10.1117/12.2501166
Show Author Affiliations
Zhiqiang Wu, Shanghai Univ. (China)
Science and Technology on Near-surface Detection Lab. (China)
Naiyuan Duan, Shanghai Univ. (China)
Chi Wang, Shanghai Univ. (China)
Jinhui Li, Science and Technology on Near-surface Detection Lab. (China)
Jun Zhu, Science and Technology on Near-surface Detection Lab. (China)


Published in SPIE Proceedings Vol. 10827:
Sixth International Conference on Optical and Photonic Engineering (icOPEN 2018)
Yingjie Yu; Chao Zuo; Kemao Qian, Editor(s)

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