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Proceedings Paper

Angular description for 3D scattering centers
Author(s): Rajan Bhalla; Ann Marie Raynal; Hao Ling; John Moore; Vincent J. Velten
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Paper Abstract

The electromagnetic scattered field from an electrically large target can often be well modeled as if it is emanating from a discrete set of scattering centers (see Fig. 1). In the scattering center extraction tool we developed previously based on the shooting and bouncing ray technique, no correspondence is maintained amongst the 3D scattering center extracted at adjacent angles. In this paper we present a multi-dimensional clustering algorithm to track the angular and spatial behaviors of 3D scattering centers and group them into features. The extracted features for the Slicy and backhoe targets are presented. We also describe two metrics for measuring the angular persistence and spatial mobility of the 3D scattering centers that make up these features in order to gather insights into target physics and feature stability. We find that features that are most persistent are also the most mobile and discuss implications for optimal SAR imaging.

Paper Details

Date Published: 17 May 2006
PDF: 10 pages
Proc. SPIE 6237, Algorithms for Synthetic Aperture Radar Imagery XIII, 623706 (17 May 2006); doi: 10.1117/12.665578
Show Author Affiliations
Rajan Bhalla, SAIC (United States)
Ann Marie Raynal, The Univ. of Texas at Austin (United States)
Hao Ling, The Univ. of Texas at Austin (United States)
John Moore, SAIC (United States)
Vincent J. Velten, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 6237:
Algorithms for Synthetic Aperture Radar Imagery XIII
Edmund G. Zelnio; Frederick D. Garber, Editor(s)

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