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Article

Time- and Space-Varying Atmospheric Phase Correction in Discontinuous Ground-Based Synthetic Aperture Radar Deformation Monitoring

1
Electronics & Information Engineering, Beihang University, Beijing 100191, China
2
Department of Engineering, University of Cambridge, Cambridge CB12PZ, UK
3
College of Information Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(11), 3883; https://doi.org/10.3390/s18113883
Received: 19 September 2018 / Revised: 6 November 2018 / Accepted: 8 November 2018 / Published: 11 November 2018
Ground-based synthetic aperture radar (GB-SAR) uses active microwave remote-sensing observation mode to achieve two-dimensional deformation measurement and deformation trend extraction, which shows great prospects in the field of deformation monitoring. However, in the process of GB-SAR deformation monitoring, the disturbances caused by atmospheric effect cannot be neglected, and the atmospheric phases will seriously affect the precision of deformation monitoring. In discontinuous GB-SAR deformation monitoring mode, the atmospheric phases are particularly affected by changes of time and space, so the traditional models of atmospheric phase correction are no longer applicable. In this paper, the interferometric phase signal model considering atmospheric phase is first established. Then, the time- and space-varying characteristics of the atmospheric phase are analyzed, and a novel time- and space-varying atmospheric phase correction algorithm, based on coherent scatterers analysis, is proposed. Finally, slope deformation monitoring experiments are carried out to verify the validity and robustness of the proposed algorithm. View Full-Text
Keywords: discontinuous GB-SAR; deformation monitoring; time- and space-varying characteristic; atmospheric phase correction; coherent scatterers discontinuous GB-SAR; deformation monitoring; time- and space-varying characteristic; atmospheric phase correction; coherent scatterers
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MDPI and ACS Style

Huang, Z.; Sun, J.; Li, Q.; Tan, W.; Huang, P.; Qi, Y. Time- and Space-Varying Atmospheric Phase Correction in Discontinuous Ground-Based Synthetic Aperture Radar Deformation Monitoring. Sensors 2018, 18, 3883. https://doi.org/10.3390/s18113883

AMA Style

Huang Z, Sun J, Li Q, Tan W, Huang P, Qi Y. Time- and Space-Varying Atmospheric Phase Correction in Discontinuous Ground-Based Synthetic Aperture Radar Deformation Monitoring. Sensors. 2018; 18(11):3883. https://doi.org/10.3390/s18113883

Chicago/Turabian Style

Huang, Zengshu, Jinping Sun, Qing Li, Weixian Tan, Pingping Huang, and Yaolong Qi. 2018. "Time- and Space-Varying Atmospheric Phase Correction in Discontinuous Ground-Based Synthetic Aperture Radar Deformation Monitoring" Sensors 18, no. 11: 3883. https://doi.org/10.3390/s18113883

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