Polarimetric 3-D Reconstruction From Multicircular SAR at P-Band

被引：34

作者：

Ponce, Octavio ^{[1
]}

Prats-Iraola, Pau ^{[1
]}

Scheiber, Rolf ^{[1
]}

Reigber, Andreas ^{[1
]}

Moreira, Alberto ^{[1
]}

Aguilera, Esteban ^{[1
]}

机构：

[1] German Aerosp Ctr DLR, Microwaves & Radar Inst, D-82234 Wessling, Germany

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2014年 / 11卷 / 04期

关键词：

Circular synthetic aperture radar (SAR) (CSAR); compressive sensing (CS); phase calibration; polarimetric SAR (PolSAR); singular value decomposition (SVD); tomography;

D O I：

10.1109/LGRS.2013.2279236

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Multicircular synthetic aperture radar (SAR) (MCSAR) is an extension of circular SAR (CSAR) characterized by the formation of a synthetic aperture in elevation with several circular flights. This imaging mode allows an improved resolution in the plane perpendicular to the line of sight (LOS perpendicular to), thus suppressing the 3-D cone-shaped sidelobes that are formed when focusing with CSAR. This letter presents the first polarimetric MCSAR airborne experiment acquired at P-band by the German Aerospace Center (DLR)'s F-SAR system over a forested area in Vordemwald, Switzerland. This letter also includes a phase calibration method based on the singular value decomposition (SVD) using ground signatures to estimate constant phase offsets within a stack of 2-D images. Focusing methods, such as fast-factorized back projection (FFBP), beamforming (BF), and compressive sensing (CS), described in previous publications are used to solve the complex reflectivity in the (x, y, z) space.

引用

页码：803 / 807

页数：5

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