3-D Spatial-Temporal Phase Unwrapping Method of GB-InSAR

被引：0
|
作者：
Tian W. [1 ,4 ]
Hou S. [1 ,5 ]
Deng Y. [1 ,3 ]
Zhou H. [1 ]
Wang J. [2 ]
Wang C. [2 ]
机构：
[1] Radar Research Lab, School of Information and Electronics, Beijing Institute of Technology, Beijing
[2] Beijing Building Research Institute Co., Ltd.of CSCEC, Beijing
[3] Beijing Key Laboratory of Embedded Real-time Information Processing Technology, Beijing
[4] Chongqing Innovation Center Beijing Institute of Technology, Chongqing
[5] Advanced Technology Research Institute, Beijing Institute of Technology, Shandong, Jinan
来源：
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2023年 / 43卷 / 11期
关键词：
Errors - Interferometry - Synthetic aperture radar;
D O I：
10.15918/j.tbit1001-0645.2023.067
中图分类号：
学科分类号：
摘要：
GB-InSAR (ground-based interferometric synthetic aperture radar) plays an important role in high precision deformation measurement. The deformation measurement reliability is affected significantly by phase unwrapping accuracy. In order to solve the cumulative phase jump error caused by random jump-noise, a 3-D spatial-temporal phase unwrapping method was proposed. Firstly, the phase jump pixels were arranged to be identified based on the unwrapped phase obtained by spatial minimum cost flow, combining the difference interference phase model to construct a correction network . And then, based on the established spatial constraint equation between the jump pixel and its neighborhood pixels, together with the temporal constraint equation between two successively interferograms to correct the 2-D unwrapped phase. Finally, simulation and measurement tests were carried out. The results of simulation and data show that the proposed method can effectively correct unwrapping errors distributed in sporadic pixels, further more correct regional phase unwrapping errors, improving the deformation inversion reliability. © 2023 Beijing Institute of Technology. All rights reserved.
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页码：1146 / 1153
页数：7
相关论文
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