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Phase unwrapping is a very important process in the digital elevation model(DEM) rebuilding of the imaging area from its interferometric phase data. This paper presents a fast phase unwrapping algorithm based on minimum discontinuity optimization, which greatly enhances the efficiency compared with the original algorithm proposed by Flynn. To accelerate the optimization process, a preprocessing process...
Phase unwrapping is a key step during the signal processing of interferometric synthetic aperture radar (InSAR) data. The precision and efficiency are two key problems of phase unwrapping. The path-following phase unwrapping algorithm usually has high computational efficiency, but low quality areas are prone to have accumulated errors. The global optimization phase unwrapping algorithm can effectively...
Phase unwrapping (PU) is important in reconstructing the digital elevation model (DEM) of a scene from its interferometric synthetic aperture radar (InSAR) data. The traditional minimum discontinuity PU algorithms are highly accurate while with time-consuming computation. To solve this problem, we combined a novel idea, fast pre-unwrapping where dipole cuts are generated and optimized, with Flynn's...
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