Polarimetric SAR target feature extraction and image formation via a semiparametric method

Jian Li; Guoqing Liu; Kun Zhang; Peter Stoica

doi:10.1117/12.396328

24 August 2000 Polarimetric SAR target feature extraction and image formation via a semiparametric method

Jian Li, Guoqing Liu, Kun Zhang, Peter Stoica

Proceedings Volume 4053, Algorithms for Synthetic Aperture Radar Imagery VII; (2000) https://doi.org/10.1117/12.396328
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

We present a semi-parametric spectral estimation algorithm for fully polarimetric synthetic aperture radar (SAR) target feature extraction and image formation. The algorithm is based on a flexible data model that models each target scatterer as a two-dimensional complex sinusoid with arbitrary amplitude and constant phase in cross-range and with constant amplitude and phase in range. The algorithm is a relaxation-based optimization approach that minimizes a nonlinear least squares (NLS) cost function. Due to using the fully polarimetric radar measurements (HH, HV, and VV) simultaneously, the algorithm provides not only more accurate target features, but also more useful information about the target of interest than the single polarization based algorithm. The algorithm has the ability to discriminate corner reflector types by also exploiting the differences in the polarimetric scattering properties of the scatterers of the target of interest. Numerical examples are presented to demonstrate the performance of the proposed algorithm.

Citation Download Citation

Jian Li, Guoqing Liu, Kun Zhang, and Peter Stoica "Polarimetric SAR target feature extraction and image formation via a semiparametric method", Proc. SPIE 4053, Algorithms for Synthetic Aperture Radar Imagery VII, (24 August 2000); https://doi.org/10.1117/12.396328

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KEYWORDS

Synthetic aperture radar

Detection and tracking algorithms

Polarimetry

Data modeling

Feature extraction

Polarization

Image acquisition

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