1 August 2002 Scattering center parameter estimation using a polynomial model for the amplitude aspect dependence
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Abstract
In this paper we address the problem of modeling the electromagnetic scattering from targets at high frequencies as scattering centers. Scattering center models are low dimensional parametric models, that are of specific interest for automatic target recognition (ATR). The main problem with scattering center parameter estimation is the aspect dependence of range and amplitude of a scattering center. We will in this paper use scattering centers whose amplitude-aspect dependence are modeled as a polynomial of some degree, and whose range-aspect dependence are modeled as a second order polynomial. The Cramer Rao bound is derived for this problem, and estimation errors for some simple cases are illustrated. An iterative estimator for the parameters of this scattering center model is also presented, and some simple examples illustrate its performance.
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Roland Jonsson, Roland Jonsson, Anna Gennel, Anna Gennel, David Loesaus, David Loesaus, Fredrik Dicander, Fredrik Dicander, } "Scattering center parameter estimation using a polynomial model for the amplitude aspect dependence", Proc. SPIE 4727, Algorithms for Synthetic Aperture Radar Imagery IX, (1 August 2002); doi: 10.1117/12.478695; https://doi.org/10.1117/12.478695
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