Statistical approaches for multichannel phase unwrapping

Synthetic Aperture Radar Interferometry allows the generation of Digital Elevation Model of an observed scene exploiting the phase signal. In order to provide the 3D reconstruction, a phase unwrapping procedure is required, which is an ill-posed problem. Multichannel datasets are able to solve the ambiguity providing a global solution. Within this manuscript two recently proposed statistical multichannel phase unwrapping methods are considered and compared. The first one is developed in the Bayesian-Markovian framework, while the second one is based on Kalman filtering. Results and comparisons on a simulated data set are reported, showing interesting results.

[1]  Giampaolo Ferraioli,et al.  Layover Solution in SAR Imaging: A Statistical Approach , 2009, IEEE Geoscience and Remote Sensing Letters.

[2]  Vito Pascazio,et al.  Maximum a posteriori estimation of height profiles in InSAR imaging , 2004, IEEE Geoscience and Remote Sensing Letters.

[3]  Otmar Loffeld,et al.  Phase unwrapping for SAR interferometry. A data fusion approach by Kalman filtering , 1999, IEEE 1999 International Geoscience and Remote Sensing Symposium. IGARSS'99 (Cat. No.99CH36293).

[4]  Giampaolo Ferraioli,et al.  Multichannel Phase Unwrapping With Graph Cuts , 2009, IEEE Geoscience and Remote Sensing Letters.

[5]  Giampaolo Ferraioli,et al.  Urban Digital Elevation Model Reconstruction Using Very High Resolution Multichannel InSAR Data , 2012, IEEE Transactions on Geoscience and Remote Sensing.

[6]  Gianfranco Fornaro,et al.  A Null-Space Method for the Phase Unwrapping of Multitemporal SAR Interferometric Stacks , 2011, IEEE Transactions on Geoscience and Remote Sensing.

[7]  Fuk K. Li,et al.  Synthetic aperture radar interferometry , 2000, Proceedings of the IEEE.

[8]  Gilda Schirinzi,et al.  InSAR phase unwrapping using nonlinear Kalman smoother , 2012, 2012 IEEE International Geoscience and Remote Sensing Symposium.

[9]  Giampaolo Ferraioli,et al.  Statistical Edge Detection in Urban Areas Exploiting SAR Complex Data , 2012, IEEE Geoscience and Remote Sensing Letters.

[10]  Steven Kay,et al.  Fundamentals Of Statistical Signal Processing , 2001 .