Abstract
A practical millimeter-wave (mmw) holographic imaging system with tunable intermediate frequency (IF) attenuator has been developed. It can be used for the detection of concealed weapons at security checkpoints, especially the airport. The system is utilized to scan the passenger and detect the weapons hidden in the clothes. To reconstruct the three dimensions (3-D) image, a holographic mmw imaging algorithm based on aperture synthesis and back scattering is presented. The system is active and works at 28–33 GHz. Tunable IF attenuator is applied to compensate the intensity and phase differences between multi-channels and multi-frequencies.
References
[1] G. Brooker, R. Hennessey, M. Bishop, et al., “Millimeter wave 3D imaging for industrial applications”, in International Conference on Wireless Broadband and Ultra Wideband Communications, 2007, p. 27.10.1109/AUSWIRELESS.2007.45Search in Google Scholar
[2] F.-H. Guan, M.-H. Yang, J. Xu, et al., “Miniaturization ka-band receiver used for passive millimeter wave imaging,” J. Infrared Millim. Waves, vol. 29, no. 4, pp. 241–244, 2010.Search in Google Scholar
[3] Y.-D. Zhang, Y.-S. Jiang, Y.-T. He, et al., “Passive millimeter-wave imaging using photonic processing technology,” J. Infrared Millim. Waves, vol. 30, no. 6, pp. 551–555, 2011.10.3724/SP.J.1010.2011.00551Search in Google Scholar
[4] S. Xiang and M. H. Yang, “Development of passive millimeter wave imaging for concealed weapon detection indoors,” Microwave Opt. Technol. Lett., vol. 25, no. 7, pp. 1701–1706, 2014.Search in Google Scholar
[5] L. Spinoulas, J. Qi, A. K. Katsaggelos, T. W. Elmer, N. Gopalsami, and A. C. Raptis, “Optimized compressive sampling for passive millimeter-wave imaging,” Appl. Opt., vol. 51, pp. 6335–6342, 2012.10.1364/AO.51.006335Search in Google Scholar PubMed
[6] M. R. Fetterman, J. Grata, G. Jubic, W. L. Kiser, and A. Visnansky, “Simulation, acquisition and analysis of passive millimeter-wave images in remote sensing applications,” Opt. Express, vol. 16, pp. 20503–20515, 2008.10.1364/OE.16.020503Search in Google Scholar
[7] S. Yeom, D.-S. Lee, Y. S. Jang, M.-K. Lee, and S.-W. Jung, “Real-time concealed-object detection and recognition with passive millimeter wave imaging,” Opt. Express, vol. 20, pp. 9371–9381, 2012.10.1364/OE.20.009371Search in Google Scholar PubMed
[8] D.-S. Lee, S. Yeom, J.-Y. Son, and, and S.-H. Kim, “Automatic image segmentation for concealed object detection using the expectation maximization algorithm,” Opt. Express, vol. 18, pp. 10659–10667, 2010.10.1364/OE.18.010659Search in Google Scholar PubMed
[9] J. P. Wilson, C. A. Schuetz, T. E. Dillon, P. Yao, C. E. Harrity, and D. W. Prather, “Passive 77 GHz millimeter-wave sensor based on optical upconversion,” Appl. Opt, vol. 51, pp. 4157–4167, 2012.10.1364/AO.51.004157Search in Google Scholar PubMed
[10] D. M. Sheen, D. L. McMakin, and T. E. Hall, “Three-dimensional millimeter-wave imaging for concealed weapon detection,” IEEE Trans. Microwave Theory Tech., vol. 49, no. 9, pp. 1581–1592, 2001.10.1109/22.942570Search in Google Scholar
[11] D. M. Sheen, D. L. McMakin, and T. E. Hall, “Near field imaging at microwave and millimeter wave frequencies,” in IEEE/MTT-S International, 2007, pp. 1693–1696.10.1109/MWSYM.2007.380033Search in Google Scholar
[12] L. Qiao, Y. Wang, Z. Shen, Z. Zhao, and Z. Chen, “Compressive sensing for direct millimeter-wave holographic imaging,” Appl. Opt., vol. 54, pp. 3280–3289, 2015.10.1364/AO.54.003280Search in Google Scholar PubMed
[13] Y.-K. Zhu, M.-H. Yang, L. Wu, Y. Sun, and X.-W. Sun, “Millimeter-wave holographic imaging algorithm with amplitude corrections,” Prog. Electromagnet. Res., vol. 49, pp. 33–39, 2016.10.2528/PIERM16050801Search in Google Scholar
[14] Q. Cheng, A. Alomainy, and Y. Hao, “On the performance of compressed sensing-based methods for millimeter-wave holographic imaging,” Appl. Opt., vol. 55, pp. 728–738, 2016.10.1364/AO.55.000728Search in Google Scholar PubMed
[15] F. Qi, I. Ocket, D. Schreurs, and B. Nauwelaers, “A system-level simulator for indoor mmW SAR imaging and its applications,” Opt. Express, vol. 20, pp. 23811–23820, 2012.10.1364/OE.20.023811Search in Google Scholar PubMed
[16] K. Yang, J. Wang, Lu. Zhao, Z. Liu, and T. Zhang, “Millimeter-wave imaging with slab focusing lens made of electromagnetic-induction materials,” Opt. Express, vol. 24, pp. 566–572, 2016.10.1364/OE.24.000566Search in Google Scholar PubMed
[17] T. W. Du Bosq, J. M. L. Alonso, and G. D. Boreman, “Millimeter wave imaging system for land mine detection,” Appl. Opt., vol. 45, pp. 5686–5692, 2006.10.1364/AO.45.005686Search in Google Scholar
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