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Summary of Proposal MTH2971

TitleMonitoring of Electric power facilities safety with high-resolution TerraSAR-X data
Investigator Hu, Jun - Central South University, School of Geosciences and Info-Physics
Team Member
Prof. Wujiao, Dai - Central South University, School of Geosciences and Info-Physics
Dr. Huiwei, Yi - Central South University, School of Geosciences and Info-Physics
Dr. Xiaoyin, Yu - Central South University, School of Geosciences and Info-Physics
SummaryThis project aims to: (1) improve the applicability of MT-InSAR algorithm in the monitoring of electric power facilities safety; (2) understand the relationship between the displacement and the safety of the electric power facilities; and (3) provide a detail displacement map of the selected electric power facilities with the TerraSAR-X data.For monitoring the displacement of electric power facilities with TerraSAR-X data, the conventional MT-InSAR will be developed to be applicable in the investigations of small-scale and/or linear-shaped structures. The persistent scatterer selection will be improved to be more robust in distinguishing the electric power facilities from the surroundings. In addition, we will develop an algorithm that can exploit the distributed scatterer in the neighboring slopes. Since the field surveying measurements (e.g., GPS and leveling observations) are generally available in and around the electric power facilities, we will integrate the field point measurements in the InSAR phase unwarpping. This is of great significance to improve the accuracy of displacement parameter estimation from the TerraSAR-X interferometry.For investigating the relationship between the displacement and the safety of the electric power facilities, the displacement velocity and the displacement evolution will both be estimated in order to better understand the deformation rule of the electric power facilities. The comparison and fusion between the TerraSAR-X derived deformations and field surverying deformations will be carried out. The local geology data will be collected and used to analysis the rule of the deformations and forecast their future trends. The finite element method (FEM) will be introduced and developed to conduct the simulated experiments for the deformation of electric power facilities. Finally, we will assess the potential risk and stability for the electric power facilities based on the inferred maximum deformation threshold of the electric power facilities.The deliverables of this project include: (1) MT-InSAR algorithm for monitoring electric power facilities with the TerraSAR-X interferometry; (2) displacement and safety reports of the selected electric power facilities in China; and (3) a number of scientific publications.The study is funded by the National Science Foundations of China (Advanced model and parameter estimation for Multi-temporal InSAR algorithm; Method of estimating three-dimensional displacements with InSAR by considering spatial-temporal correlation of observations), and the funding of Central Southern China Electric Power Design Institute (Development of InSAR technology in the monitoring of electric power facilities).

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