Interferometric SAR Phase Unwrapping Based on Markov Random Fields

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Chen, Runpu; Weidong, Yu; Deng, Yun Kai; Wang, Robert; Liu, Yue; Shao, Yunfeng (Department of Space Microwave Remote Sensing System, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

For Digital Elevation Model (DEM) generation using InSAR technique, phase unwrapping is always a crucial and sophisticated issue. In this paper, a new phase unwrapping algorithm based on Markov random fields is proposed. Taking priori knowledge of original phases into account, a Markov random field is used to formulate the relationship between wrapped phases and their original values. By analysis on the Markov random field, it is convenient to illustrate the local properties of the original phases. In the end, experiments on synthetic and real data prove the validation of this algorithm.