Use of Synthetic Aperture Radar and Uncrewed Aerial Vehicle for Assessing Pavement Condition
Publication: International Conference on Transportation and Development 2024
ABSTRACT
The long-term monitoring of transportation infrastructure assets, such as pavements, highway embankments, and earth retaining systems, at a lower cost, and with short mobilization time, is of interest to owners and stakeholders. Due to the improvement in spatial and temporal resolution of synthetic aperture radar (SAR) remote sensing systems as well as the drastic reduction in the price of data acquisition, SAR has now become a viable method to provide an economical and rapid condition assessment of transportation assets. This paper presents an example of this through a case study on the inspection and characterization of a pavement surface based on the amplitude of backscattering from an X-band radar. In situ characterization of the test site was first performed using aerial photogrammetry techniques with uncrewed aerial vehicle (UAV). The pavement features, extracted from the digital twin model created using photogrammetry, were compared with the radar cross section (RCS) of the pavement. The results show that problematic areas evident during in situ characterization can be delineated and quantified based on the normalized radar cross-section of the pavement surface. Overall, the outcomes of this research demonstrate the potential of SAR for future transportation asset management undertakings and can be of significant interest to state engineers and practitioners.
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International Conference on Transportation and Development 2024
Pages: 866 - 875
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Published online: Jun 13, 2024
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