A Portable Through-Wall Microwave Imaging System
关键词:
Vector Network Analyzer, imaging and scattering, through-wall imaging摘要
A microwave imaging system requires the design and implementation of an imaging algorithm, a sufficiently sensitive/accurate vector network analyzer, and antennas. This work presents a simple imaging algorithm, design and implementation of a low-cost VNA and antennas that are able to operate at 4 - 6 GHz. The commercial VNAs are of general purpose and are too expensive for microwave imaging applications. The design trade-offs applied to VNA are presented and implemented circuits are demonstrated. Using the presented VNA, a hand-held imaging system is implemented that extracts scattering parameters to create the target image. S-parameters obtained from the preselected filters with the designed VNA are provided to demonstrate the quality of the design. Target images are created for a couple of commonly used walls to demonstrate the overall system performance.
##plugins.generic.usageStats.downloads##
参考
B. Gorgi and B. Zakeri, “Time-reversal throughwall microwave imaging in rich scattering environment based on target initial reflection method,” ACES Journal, vol. 30, no. 6, pp. 626637, June 2015.
T. Meyer, “Microwave imaging of high-contrast objects,” Doctoral Dissertation, Fakultat fur Elektrotechnik und Informationstechnik, OttovonGuericke Universitat Magdeburg, 1972.
S. Y. Semenov, A. E. Bulyshev, A. Abubakar, V. G. Posukh, Y. E. Sizov, A. E. Souvorov, P. M. van den Berg, and T. C. Williams, “Microwavetomographic imaging of the high dielectric-contrast objects using different image-reconstruction approaches,” IEEE Trans. on Microwave Theory and Tech., vol. 53, no. 7, pp. 2284-2294, July 2005.
Q. Fang, P. M. Meaney, and K. D. Paulsen, “Microwave image reconstruction of tissue property dispersion characteristics utilizing multiplefrequency information,” IEEE Transactions on Microwave Theory and Techniques, vol. 52, no. 8, pp. 1866-1875, Aug. 2004.
I. Akduman, L. Crocco, and F. Soldovieri, “Experimental validation of a simple system for through-the-wall inverse scattering,” IEEE Geoscience and Remote Sensing Letters, vol. 8, no. 2, pp. 258 - 262, Mar. 2011.
R. Solimene, F. Soldovieri, G. Prisco, and R. Pierri, “Three-dimensional through-wall imaging under ambiguous wall parameters,” IEEE Transactions on Geoscience and Remote Sensing, vol. 47, no. 5, pp. 1310-1317, May 2009.
S. Kaya and İ. Ölçer, “Duvar İçi Mikrodalga Görüntüleme algoritması: Microwave throughwall imaging algorithm,” 19, Sinyal İşleme ve Uygulamaları Kurultayı (SIU 2011), Kemer, Antalya, Apr. 2011.
G. L. Charvat, “A low-power radar imaging system,” Doctoral Dissertation, Michigan State University, East Lansing, MI, 2007.
C. Gilmore, P. Mojabi, and J. LoVetri, “Comparison of an enhanced distorted born iterative method and the multiplicative regularized contrast source inversion method,” IEEE Transactions On Antennas and Propagation, vol. 57, no. 8, pp. 2341-2351, Aug. 2009.
K. Hoffmann and Z. Skvor, “A novel vector analyzer,” IEEE Transactions on Microwave Theory and Techniques, vol. 46, no. 12, pp. 2520- 2523, Dec. 1998.
A. Fung, L. Samoska, G. Chattopadhyay, T. Gaier, P. Kangaslahti, D. Pukala, C. Oleson, A. Denning, and Y. Lau, “Two-port vector network analyzer measurements up to 508 GHz,” IEEE Transactions on Instrumentation and Measurement, vol. 57, no. 6, pp. 1166 - 1170, June 2008.
M. A. Abou-Khousa, M. A. Baumgarther, S. Kharkovsky, and R. Zoughi, “Novel and simple high frequency single-port vector network analyzer,” IEEE Transactions on Instrumentation and Measurement, vol. 59, no. 3, pp. 534 - 542, Mar. 2010.
C.-H. Tseng and T.-H. Chu, “An effective usage of vector network analyzer for microwave imaging,” IEEE Transactions on Microwave Theory and Techniques, vol. 53, no. 9, pp. 2884 - 2891, Sept. 2005.
R. Q. Lee and R. N. Simons, Advances in Micro Strip and Printed Antennas, John Wiley and Sons, USA, 1997.
B. Türetken, U. Buluş, E. Başaran, E. Akkaya, K. Sürmeli, and H. Aniktar, Microwave and Millimeter Wave Circuits and Systems: Emerging Design, Technologies and Applications, John Wiley & Sons Publisher, Ch. 17, 2012.
R. Marklein, Review of Radioscience, ISBN 9780471268666, Ch. 11, 2002.
