Monitoring urban land subsidence by dual-polarization Sentinel-1 data: a case study of Shanghai

doi:10.13474/j.cnki.11-2246.2019.0360

Abstract

Abstract: Polarization is a very important concept in remote sensing satellite imaging.Different polarization data contain different ground information and have different application values.In view of the application of VV and VH polarization data in urban ground subsidence monitoring, the dual-polarization Sentinel-1 data is used to monitor the ground subsidence in the urban area of Shanghai. The reasons for the differences between the two monitoring results are analyzed and compared with the leveling monitoring data for verification. The results show that the monitoring integrity of VV polarization data is better than that of VH polarization data. The quality of coherence and the number of effective pixels of VV polarization data are both higher than that of VH polarization data.The deviation between monitoring results and leveling data is smaller than that of VH polarization data.

Key words: SBAS-InSAR, dual-polarization, urban, land subsidence, interference

CLC Number:

P258

XIONG Jiacheng, NIE Yunju, LUO Yue, LI Yongfei. Monitoring urban land subsidence by dual-polarization Sentinel-1 data: a case study of Shanghai[J]. Bulletin of Surveying and Mapping, 2019, 0(11): 98-102,129.

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