Sensing targets behind the opaque structures based on the combined method of ray tracing and diffraction

Xiaoyang Huang; Bingquan Chen; Hong-Liang Cui; Ke Wang; Robert Pastore; Mark Farwell; Wilbur Chin; Jennifer Ross; Moses Mingle

doi:10.1117/12.629764

17 November 2005 Sensing targets behind the opaque structures based on the combined method of ray tracing and diffraction

Xiaoyang Huang, Bingquan Chen, Hong-Liang Cui, Ke Wang, Robert Pastore, Mark Farwell, Wilbur Chin, Jennifer Ross, Moses Mingle

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Proceedings Volume 6010, Infrared to Terahertz Technologies for Health and the Environment; 60100N (2005) https://doi.org/10.1117/12.629764
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

The modeling of through-wall sensing using ultra-wideband (UWB) signals is considered. The combined method of ray tracing and diffraction (CMRTD) is employed to analyze the interaction between the UWB signal and the target. The result is obtained in frequency domain, and then transformed into time domain by use of inverse Fourier transform (IFT). Scattering from a two-dimensional (2D) perfectly conducting circular cylinder is calculated and the result is shown in agreement with that obtained from the eigenfunction expansion method. Furthermore, the attenuating effects of walls are considered based on the geometrical optics. Numerical results of scattering from a 2D perfectly conducting circular cylinder behind a homogeneous, single-layered wall are given in both graphical and tabular formats.

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Xiaoyang Huang, Bingquan Chen, Hong-Liang Cui, Ke Wang, Robert Pastore, Mark Farwell, Wilbur Chin, Jennifer Ross, and Moses Mingle "Sensing targets behind the opaque structures based on the combined method of ray tracing and diffraction", Proc. SPIE 6010, Infrared to Terahertz Technologies for Health and the Environment, 60100N (17 November 2005); https://doi.org/10.1117/12.629764

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KEYWORDS

Scattering

Ray tracing

Diffraction

Opacity

Fourier transforms

UWB radar

Finite-difference time-domain method

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