A hybrid scheme for compensating ionospheric scintillation effect on spaceborne P-band SAR

The spaceborne P-band synthetic aperture radar (SAR) is affected by ionospheric scintillation, which seriously impacts the imaging quality and measurements of biomass. Considering polarization modes and topographic features, a hybrid scheme for compensating ionospheric scintillation effect is proposed based on Phase Gradient Autofocus (PGA) and Faraday rotation (FR) estimation based method. Simulating with ALOS-PALSAR data, we quantitatively analyze the effectiveness of compensation and verify the scheme is capable of compensating scintillation effect considering different polarization modes and topographic features.

[1]  D. L. Knepp,et al.  The effect of ionospheric scintillation on phase gradient autofocus processing of synthetic aperture radar , 2013, 2013 7th European Conference on Antennas and Propagation (EuCAP).

[2]  R. Bates,et al.  Effects of magneto-ionic propagation on the polarization scattering matrix , 1965 .

[3]  T. Toan.  A P-band SAR for global forest biomass measurement: The BIOMASS mission , 2014, 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS).

[4]  Konstantinos Papathanassiou,et al.  Impacts of Ionospheric Scintillation on the BIOMASS P-Band Satellite SAR , 2014, IEEE Transactions on Geoscience and Remote Sensing.

[5]  Klaus Scipal,et al.  Biomass retrieval from P-band polarimetric and interferometric SAR data, challenges and recent results , 2014, 2014 IEEE Geoscience and Remote Sensing Symposium.

[6]  Konstantinos Papathanassiou,et al.  Estimation and correction of scintillation effects on spaceborne P-band SAR images , 2012, 2012 IEEE International Geoscience and Remote Sensing Symposium.