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PIER PIER B PIER C PIER M PIER Letters
2009-02-12
Evaluation of TRM in the Complex through Wall Environment
By
Wenjun Zheng,

    Dr. Wenjun Zheng

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Zhiqin Zhao,

    Professor Zhiqin Zhao

    School of Electronic Engineering

    University of Electronic Science and Technology of China

    China

    Homepage

Zai-Ping Nie,

    Professor Zai-Ping Nie

    School of Electric Engineering

    University of Electric Science and Technology of China

    China

    Homepage

Qing Huo Liu

    Prof. Qing Huo Liu

    Department of Electrical and Computer Engineering

    Duke University

    USA

    Homepage

Progress In Electromagnetics Research, Vol. 90, 235-254, 2009
doi:10.2528/PIER09011003
Abstract
Practical interests arising from behind-the-wall target detection, surveillance and reconnaissance et al. claim for high capability of imaging in complicated environments. Time Reversal Mirror (TRM) technique, making use of the principle of reciprocity, emerges as a promising way to deal with such complex problem. In this paper, we investigate TRM in the ultra-wideband (UWB) through wall radar imaging (TWRI) through numerical simulation. The probing region is a square room, with walls of rough surface and random media parameters. TRM is used to image the target settled in the room. We evaluate the degradation of the images when the aperture of the array is decreased or the received signals are contaminated by noises. The back projection (BP) algorithm is employed here as a comparison for imaging quality. For the case in which the random walls are changed between the forward and inverse phase of time reversal, we check the imaging stability and applied an averaged Green's function to improve the imaging quality. Finally, some interesting conclusions are drawn.
Citation
Wenjun Zheng, Zhiqin Zhao, Zai-Ping Nie, and Qing Huo Liu, "Evaluation of TRM in the Complex through Wall Environment," Progress In Electromagnetics Research, Vol. 90, 235-254, 2009.
doi:10.2528/PIER09011003
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