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Proceedings Paper

3D SAR image formation for underground targets using ultra-wideband (UWB) radar
Author(s): Lam Nguyen; Traian Dogaru; Roberto Innocenti
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Paper Abstract

This paper analyzes the application of ultra-wideband ground-penetrating radar (GPR) in a down-looking configuration for the detection of buried targets. As compared to previous studies, where target detection algorithms have been developed based on the radar range profiles alone (pre-focus data), we investigate the potential performance improvement by forming synthetic aperture radar (SAR) images of the targets. This becomes important in scenarios with small signal-to-noise or signal-to-clutter ratios. Our three-dimensional (3-D) image formation algorithm is based on the backprojection technique. We apply this method to radar scattering data obtained through computer simulation by the finite-difference time-domain (FDTD) technique. Our analysis demonstrates the advantages of using focused SAR images versus the pre-focus range profiles. We also perform a parametric study of several physical factors that could affect the image quality.

Paper Details

Date Published: 29 April 2009
PDF: 10 pages
Proc. SPIE 7308, Radar Sensor Technology XIII, 73081F (29 April 2009); doi: 10.1117/12.829631
Show Author Affiliations
Lam Nguyen, Army Research Lab. (United States)
Traian Dogaru, Army Research Lab. (United States)
Roberto Innocenti, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 7308:
Radar Sensor Technology XIII
Kenneth I. Ranney; Armin W. Doerry, Editor(s)

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