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Under-Foliage Object Imaging Using SAR Tomography and Polarimetric Spectral Estimators

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3 Author(s)
Yue Huang ; Inst. of Electron. & Telecommun. of Rennes, Univ. of Rennes 1, Rennes, France ; Ferro-Famil, L. ; Reigber, A.

This paper addresses the imaging of objects located under a forest cover using polarimetric synthetic aperture radar tomography (POLTOMSAR) at L-band. High-resolution spectral estimators, able to accurately discriminate multiple scattering centers in the vertical direction, are used to separate the response of objects and vehicles embedded in a volumetric background. A new polarimetric spectral analysis technique is introduced and is shown to improve the estimation accuracy of the vertical position of both artificial scatterers and natural environments. This approach provides optimal polarimetric features that may be used to further characterize the objects under analysis. The effectiveness of this novel technique for POLTOMSAR is demonstrated using fully polarimetric L-band airborne data sets acquired by the German Aerospace Center (DLR)'s E-SAR system over the test site in Dornstetten, Germany.

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:50 ,  Issue: 6 )