Wide-area InSAR Time Series Analysis Technique for Monitoring of Surface Deformation in the North China Plain

Based on the SAR satellite images from 2015 to 2019, this paper proposes a novel wide-area InSAR time series analysis technology for high-precision and continuous monitoring of the surface deformation in the North China Plain. Firstly, standard interferometric processing is carried out on SAR images...

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Bibliographic Details
Published inBeijing da xue xue bao Vol. 59; no. 6; pp. 934 - 944
Main Authors Li, Mingjia, Sun, Jianbao, Xue, Lian, Shen, Zhengkang
Format Journal Article
LanguageChinese
Published Beijing Acta Scientiarum Naturalium Universitatis Pekinenis 01.01.2023
Subjects
Groundwater
Spatial discrimination
Time series
China
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Summary:Based on the SAR satellite images from 2015 to 2019, this paper proposes a novel wide-area InSAR time series analysis technology for high-precision and continuous monitoring of the surface deformation in the North China Plain. Firstly, standard interferometric processing is carried out on SAR images to obtain the interferogram. Then the parallelized StaMPS method is used to extract all PS pixels in the interferogram and obtain the deformation time series with full resolution. Next the atmospheric noise is estimated and removed using the joint atmospheric correction method, through combination of the atmospheric model correction and common scene stacking. After this processing flow, we successfully obtain a solution of large spatial scale, long-term span, full spatial resolution, and high precision deformation in the North China Plain, and detect the subsidence deformation pattern with a strong signal of up to 100 mm/a in central plain due to groundwater extraction. Compared with existing algorithms, the paral
ISSN:0479-8023
DOI:10.13209/j.0479-8023.2023.069