Abstract:Satellite remote sensing technology and ground sensors together constitute a united safety monitoring network for major oil and gas infrastructure. The satellite retrieved surface parameters integrated with in-situ measurements has gradually become a hot research topic in remote sensing applications. Combined with ground sensor network monitoring data, the temporal changes of surface subsidence detected by the SBAS InSAR technology were analyzed, and the data response relationship between the GNSS (Global Navigation and Positioning System) surface displacement, multi-layer depth displacement gauge, pipeline strain data, which synchronized SBAS-InSAR surface deformation, were also explored, as well as the influence of annal rainfall -drought cycle is further analyzed. The results show that the most serious SBAS-INSAR land subsidence from May 2019 to April 2022, reaching a maximum of -394mm, which located in the pipeline corridor area of the LNG (Liquified Natural Gas) Harbor. The SBAS-InSAR retrieved 15-53mm surface subsidence, has a 9-57mm displacements response in GNSS, and they are significantly correlated and have a good consistency in temporal fluctuation; The characteristics of surface deformation changes in SBAS-InSAR and the response characteristics of displacement data from multi-layer displacement meters at depths of 1m, 2m, and 3m are closely related to precipitation, showing significant fluctuations between rainy and dry seasons. The two have good synchronicity, indicating that SBAS-InSAR surface deformation changes can reveal the displacement change characteristics of underground soil layers; The surface subsidence of SBAS-InSAR is positively correlated with the underground pipeline strain, which implies that the SBAS-InSAR retrieved land subsidence is a good indicator of the strain of underground pipelines. The integrated application of time series deformation data from SAR interference processing and the underground pipeline monitoring data can provide useful reference for the construction of future satellite ground integrated pipeline safety monitoring technology system.