The vector digital TV filtering and phase unwrapping

In this paper, we analyzed the relation between "noises" and interferometric synthetic aperture radar (SAR) phase unwrapping, and applied novel digital TV filtering methods to the interferograms. The filtering algorithm has less computation load than iteration anisotropic diffusion filtering and provides reliable accuracy for our phase unwrapping. The numerical results proved phase fringes protected and residues largely reduced, which lay the foundation for efficient branch-cut phase unwrapping.