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Wide-angle sar image formation with migratory scattering centers and regularization in hough space

Çetin, Müjdat and Varshney, Kush R. and Fisher, III, John W. (2006) Wide-angle sar image formation with migratory scattering centers and regularization in hough space. In: Adaptive Sensor Array Processing Workshop,

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Abstract

Wide-angle synthetic aperture radar imaging presents numerous challenges, but also opportunities to extract object-level information. We present a methodology using an overcomplete dictionary and sparsifying regularization to characterize anisotropy (aspect-dependent scattering amplitude), and migration (aspectdependent scattering center spatial location), into the image formation process. We also introduce regularization terms in the normal parameter space of the Hough transform that favor solutions with sparsity along a line and consequently parsimony in the representation of glint anisotropy. The characterization of scatterer migration directly gives information about size and shape of objects in the spatial domain and such information can also be inferred from the parsimonious representations we extract for glint-type scattering.

Item Type:Papers in Conference Proceedings
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
ID Code:1165
Deposited By:Müjdat Çetin
Deposited On:19 Dec 2006 02:00
Last Modified:29 Aug 2007 15:44

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