Angular description for 3D scattering centers

Rajan Bhalla; Ann Marie Raynal; Hao Ling; John Moore; Vincent J. Velten

doi:10.1117/12.665578

17 May 2006 Angular description for 3D scattering centers

Rajan Bhalla, Ann Marie Raynal, Hao Ling, John Moore, Vincent J. Velten

Proceedings Volume 6237, Algorithms for Synthetic Aperture Radar Imagery XIII; 623706 (2006) https://doi.org/10.1117/12.665578
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

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.

Citation Download Citation

Rajan Bhalla, Ann Marie Raynal, Hao Ling, John Moore, and Vincent J. Velten "Angular description for 3D scattering centers", Proc. SPIE 6237, Algorithms for Synthetic Aperture Radar Imagery XIII, 623706 (17 May 2006); https://doi.org/10.1117/12.665578

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