Tomographic Analyses of Non-stationary Volumetric Scattering

Conference: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
06/07/2010 - 06/10/2010 at Aachen, Germany

Proceedings: EUSAR 2010

Pages: 4Language: englishTyp: PDF

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Lombardini, Fabrizio; Cai, Francesco (Department of Information Engineering, University of Pisa, 56122 Pisa, Italy)
Pardini, Matteo (Deutsches Zentrum für Luft- und Raumfahrt (DLR), Microwave and Radar Institute, Oberpfaffenhofen, Germany)

Much interest is continuing to grow in the advanced differential tomography framework which crosses differential SAR interferometry with 3D multibaseline tomography, producing ‘space-time’ signatures of scattering dynamics in the SAR cell. In this paper, the important effect of temporal decorrelation during the repeat pass multibaseline acquisition is analyzed on superresolution (MUSIC) tomography. Moreover, a differential tomographic processor is proposed to get the new functionalities of forest volume tomography robust to temporal decorrelation, and of subcanopy ground subsidence monitoring. To this aim, a generalized MUSIC method matched to non line spectra is adapted to the 2-D domain. Simulated and first airborne real data results prove the concept.