Integration of InSAR Technology in the Stability Assessment of Load Bearing Structures
DOI:
https://doi.org/10.22213/2413-1172-2021-2-60-67Keywords:
InSAR, Sentinel-1, civil engineering, structural monitoring, non-destructive testingAbstract
Non-destructive condition monitoring of buildings and other civil engineering structures is a challenging issue. Even though many measuring techniques have been developed in the last decades, still, significant knowledge gaps exist in building monitoring. One of the major problems of structural condition assessment is that the measured parameters are evaluated only occasionally. However, there is just a limited number of techniques available that can provide continuous monitoring of the technical condition of structures and provide time-series information on their construction stability. The main purpose of the paper is to introduce a diagnostic technique that has the potential to overcome the above-mentioned shortages by combining periodic non-destructive measurements with continuous monitoring obtained by a practical application of satellite remote sensing. Synthetic Aperture Radar (SAR) has many advantages that are worth being considered by structural engineers for their routine practice of assessing the stability of existing structures. Our focus is to provide insight into the theory of Interferometric Synthetic Aperture Radar (InSAR) technology and show its combined application with other condition assessment techniques via a real case study. The efficiency of the proposed methodology was shown by the comparison of displacement results of a water tower obtained by InSAR monitoring, conventional geodetic survey and numerical analysis.References
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