A model incorporating orientation angle shift effect for polarimetric SAR calibration

The various applications of polarimetric SAR data have brought to the fore questions of polarimetric calibration. Most polarimetric calibration methods based on distributed targets employed reflection symmetry assumption, which might be inconsistent with the truth due to a possible orientation angle...

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Bibliographic Details
Main Authors: Shi-qi Xing, Can-bin Hu, Zhen-hai Xu, De-jun Feng, Da-hai Dai
Format: Conference Proceeding
Language:English
Subjects:
Calibration
Covariance matrix
Data models
Equations
Mathematical model
Numerical models
orientation angle
POLSAR
Scattering
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Summary:The various applications of polarimetric SAR data have brought to the fore questions of polarimetric calibration. Most polarimetric calibration methods based on distributed targets employed reflection symmetry assumption, which might be inconsistent with the truth due to a possible orientation angle shift, and therefore would skew the polarimetric signatures of targets. In this paper, a model incorporating orientation angle shift effect is introduced to characterize the POL SAR data, and a numeric algorithm is presented. The proposed calibration method can preserve the orientation angle information precisely. Simulations and real SAR data experiments are performed to test the proposed method.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2011.6049165