Journal of Guangdong University of Technology ›› 2022, Vol. 39 ›› Issue (03): 77-82.doi: 10.12052/gdutxb.210084

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Surface Deformation Monitoring Based on Dual-polarization Time Series InSAR Technology

Chen Jia-wei1,2, Ng Alex Hay-Man1,2, Wang Hua1, Chen Bing-jie1   

  1. 1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2021-05-31 Online:2022-05-10 Published:2022-05-19

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Abstract: To solve the problem of poor monitoring results generated by time-series Interferometric Synthetic Aperture Radar (TS-InSAR) technology in low coherence areas, the traditional TS-InSAR method is improved from the perspective of polarization data. Taking Zhuhai Gaolan Port Economic Zone as the research subject, the article examines 47 dual-polarized Sentinel-1A satellite images with vertical-transmit-and-vertical-receive mode (VV) and vertical-transmit-and-horizontal-receive mode (VH) to experiment and obtain results and do the validation analysis. Results show that the monitoring quality of the time series InSAR technology can be effectively improved by applying dual-polarization data; and that the subsidence in this area is caused by geological conditions and reclamation projects. This research can provide a theoretical basis for the monitoring and prevention of regional subsidence.

Key words: time-series InSAR, Sentinel-1A, dual-polarization, subsidence

CLC Number: 

  • TU196
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