3D SAR image formation for underground targets using ultra-wideband (UWB) radar

Lam Nguyen; Traian Dogaru; Roberto Innocenti

doi:10.1117/12.829631

29 April 2009 3D SAR image formation for underground targets using ultra-wideband (UWB) radar

Lam Nguyen, Traian Dogaru, Roberto Innocenti

Proceedings Volume 7308, Radar Sensor Technology XIII; 73081F (2009) https://doi.org/10.1117/12.829631
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

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.

Citation Download Citation

Lam Nguyen, Traian Dogaru, and Roberto Innocenti "3D SAR image formation for underground targets using ultra-wideband (UWB) radar", Proc. SPIE 7308, Radar Sensor Technology XIII, 73081F (29 April 2009); https://doi.org/10.1117/12.829631

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