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Proceedings Paper

FOPEN-SAR detection by direct use of simple scattering physics
Author(s): Mark R. Allen; Julie M. Jauregui; Lawrence E. Hoff
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Paper Abstract

Foliage penetrating VHF/UHF SAR can image hidden ground vehicles, but numerous false alarms produced by residual tree trunk image spikes strongly impede automatic detection. This paper demonstrates at least 30 dB reduction in tree trunk false alarms through an approach that directly uses target and clutter scattering physics in a matched filter detector. The large improvement results because scattering is measured over wide angles. Yet, because of the long wavelength, few scatterers are involved, and modeling is both simple and robust. The target is modeled by the dihedral formed between its side and the ground, whereas trees are modeled by vertical cylinders. Since input experimental data is nearly complex-Gaussian, the detector is nearly optimal, and its implementation is made computationally efficient by filtering in two steps. Although the matching is demonstrated in terms of angle diversity, frequency, and polarimetry may be included, and the method fits into an efficient overall ATR search.

Paper Details

Date Published: 5 June 1995
PDF: 11 pages
Proc. SPIE 2487, Algorithms for Synthetic Aperture Radar Imagery II, (5 June 1995); doi: 10.1117/12.210863
Show Author Affiliations
Mark R. Allen, Science Applications International Corp. (United States)
Julie M. Jauregui, Science Applications International Corp. (United States)
Lawrence E. Hoff, Naval Command, Control and Ocean Surveillance Ctr. (United States)


Published in SPIE Proceedings Vol. 2487:
Algorithms for Synthetic Aperture Radar Imagery II
Dominick A. Giglio, Editor(s)

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