Study on Surface Deformation in Shenzhen Based on Dual Polarimetric SAR Data
This paper aims at mining the polarization information of the data,through using the Sentinel-1A satellite IW model image of Shenzhen reclamation area,the relatively optimized polarization combinations selection experiment based on dual polarization SAR data for the extraction of surface deformation is carried out,and the interference measurement is carried out by using Permanent Scatteres InSAR(PSIn-SAR)technique.Then the surface deformation rate of Shenzhen reclamation area was obtained,and the temporal deformation characteristics of key subsidence areas were analyzed and compared with SBAS technique.The experimental results show that the data of VV+VH polarization in Shenzhen reclamation area are better than those of VV polarization in the accuracy and scope of surface deformation extraction.What's more,it is also found that there are three main deformation funnels in the study area,which are located near Fuzhou Avenue in Baoan District,near the Shekou Water Bay Road,and near the Yitian Subway Station in Futian District,Shenzhen respectively.The largest subsidence rate in this area is-16.7～-14.26mm/a,concentrated in southern Futian District.The maximum uplift rate is 7.6～10.4mm/a,concentrated in Shekou area.
万方数据
维普
