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Analysis and evaluation of InSAR phase unwrapping algorithms

Ming Hao

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Abstract

Phase unwrapping is crucial in InSAR and a major source of InSAR errors.At the same time it is also very important and difficult in studying InSAR technique.The result of InSAR(DEM or deformation) is different when choosing different phase unwrapping algorithms.The results of Goldstein branch-cut algorithm,Preconditioned Conjugate Gradient algorithm and Snaphu algorithm in Xi'an are compared.The unwrapping results is evaluated by several criteria.The characteristic and application scope of each algorithm is analyzed,and the prospect of phase unwrapping algorithms is discussed.

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What this paper is about

Phase unwrapping is crucial in InSAR and a major source of InSAR errors.At the same time it is also very important and difficult in studying InSAR technique.The result of InSAR(DEM or deformation) is different when choosing different phase unwrapping algorithms.The results of Goldstein branch-cut algorithm,Preconditioned Conjugate Gradient algorithm and Snaphu algorithm in Xi'an are compared.The unwrapping results is evaluated by several criteria.The characteristic and application scope of each algorithm is analyzed,and the prospect of phase unwrapping algorithms is discussed.

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Available abstract

Phase unwrapping is crucial in InSAR and a major source of InSAR errors.At the same time it is also very important and difficult in studying InSAR technique.The result of InSAR(DEM or deformation) is different when choosing different phase unwrapping algorithms.The results of Goldstein branch-cut algorithm,Preconditioned Conjugate Gradient algorithm and Snaphu algorithm in Xi'an are compared.The unwrapping results is evaluated by several criteria.The characteristic and application scope of each algorithm is analyzed,and the prospect of phase unwrapping algorithms is discussed.

Key concepts: Interferometric synthetic aperture radar, Phase unwrapping, Algorithm, Computer science, Scope (computer science), Conjugate gradient method, Phase (matter), Geodesy

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