In order to comprehensively monitor the surface deformation of ports and prevent hazards caused by ground subsidence and collapse,Sentinel-1A data of orbit ascending and descending in Guoyuan port from November 2014 to November 2017 were collected,and SBAS-InSAR is applied to monitoring and analyzing the ground deformation.The results show that the observed subsidence trend is consistent with leveling measurements;the vertical surface deformation rate in Guoyuan Port is in the range of-33.49 to 13.49 mm·a-1,and the east-west surface deformation rate is in the range of-16.16 to 29.44mm·a-1.The large-scale subsidence primarily occurred in the port's stacking area and traffic hub,and the settlement rate is significantly correlated with the distance from the traffic line.
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万方数据