Radar Interferometry for Urban Infrastructure Stability Monitoring: From Techniques to Applications

Songbo Wu, Bochen Zhang, Xiaoli Ding (), Lei Zhang, Zhijie Zhang and Zeyu Zhang
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Songbo Wu: Department of Land Surveying and Geo-Informatics, Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong 999077, China
Bochen Zhang: MNR Key Laboratory for Geo-Environmental Monitoring of Great Bay Area, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Xiaoli Ding: Department of Land Surveying and Geo-Informatics, Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong 999077, China
Lei Zhang: College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, China
Zhijie Zhang: Department of Land Surveying and Geo-Informatics, Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong 999077, China
Zeyu Zhang: Department of Land Surveying and Geo-Informatics, Research Institute for Land and Space, The Hong Kong Polytechnic University, Hong Kong 999077, China

Sustainability, 2023, vol. 15, issue 19, 1-32

Abstract: Urban infrastructure is an important part of supporting the daily operation of a city. The stability of infrastructure is subject to various deformations related to disasters, engineering activities, and loadings. Regular monitoring of such deformations is critical to identify potential risks to infrastructure and take timely remedial actions. Among the advanced geodetic technologies available, radar interferometry has been widely used for infrastructure stability monitoring due to its extensive coverage, high spatial resolution, and accurate deformation measurements. Specifically, spaceborne InSAR and ground-based radar interferometry have become increasingly utilized in this field. This paper presents a comprehensive review of both technologies for monitoring urban infrastructures. The review begins by introducing the principles and their technical development. Then, a bibliometric analysis and the major advancements and applications of urban infrastructure monitoring are introduced. Finally, the paper identifies several challenges associated with those two radar interferometry technologies for monitoring urban infrastructure. These challenges include the inconsistent in the distribution of selected measurements from different methods, obstacles arising from rapid urbanization and geometric distortion, specialized monitoring techniques for distinct urban features, long-term deformation monitoring, and accurate interpretation of deformation. It is important to carry out further research to tackle these challenges effectively.

Keywords: infrastructure stability monitoring; deformation monitoring; radar interferometry; InSAR; GBRI (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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