An Analysis on Path Following Phase Unwrapping Algorithms

In this paper, phase unwrapping techniques, which are the most critical step in extracting the Digital Topography Maps of the region in İnterferometric Synthetic Aperture Radar imaging, are discussed and compared. Algorithms based on path following method for the phase unwrapping, which is the heart of the interferometric SAR (InSAR/IFSAR) technique were analyzed comparatively using real SAR images. Comparisons of the algorithms in terms of performance, duration, complexity have been made and evaluations on how to cover the missing aspects have been included. In addition, both Matlab and C / C ++ codes of the algorithms are analyzed due to time constraints that may occur while producing the topography map of large regions.