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Using a Grid-Based Filter to Solve InSAR Phase Unwrapping

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3 Author(s)
Martinez-Espla, J.J. ; Dept. de Fis., Univ. de Alicante, Alicante ; Martinez-Marin, T. ; Lopez-Sanchez, J.M.

This letter presents a phase-unwrapping (PU) algorithm for synthetic aperture radar interferometry based on a grid-based filter. The proposed PU algorithm, which is based on state-space techniques, simultaneously performs noise filtering and PU. The formulation of this technique provides independence from noise statistics and is not constrained by the nonlinearity of the problem. Results obtained with synthetic data show a significant improvement with respect to other conventional PU algorithms in some situations.

Published in:

Geoscience and Remote Sensing Letters, IEEE  (Volume:5 ,  Issue: 2 )