School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran
10.22059/eoge.2023.364843.1141
Abstract
This study presents the feasibility and performance evaluation of a developed ground-based synthetic aperture radar (GBSAR) system for monitoring vertical displacement in bridge structures. Bridges, as critical transportation infrastructures, require regular assessment to ensure safety. In recent years, ground-based radar and synthetic aperture radar (SAR) systems have demonstrated their effectiveness as non-contact displacement monitoring tools for structural displacement monitoring. This study utilizes a prototype GBSAR system consisting of a W-band radar, TI-AWR1642BOOST, with a maximum signal bandwidth of 4 GHz, incorporated with a 15 cm horizontal mechanical rail to enhance cross-range resolution. To evaluate the performance of the GBSAR, two types of experiments were conducted: laboratory experiments in a controlled situation and outdoor simulations by creating a light-weight bridge and inducing displacements through the addition or removal of loads on its surface. The results obtained from the laboratory experiments showcased a measurement accuracy ranging from 50 to 80 micrometers in vertical displacement, while the results from the simulated bridge showed a final accumulated vertical displacement error below 1 mm. These overall results validate the applicability of the developed GBSAR system for vertical displacement monitoring of structures with sub-millimeter accuracy.
Hosseiny, B. and Amini, J. (2023). Bridge Vertical Deformation Monitoring Using GBSAR Repeat-Pass Observations. Earth Observation and Geomatics Engineering, 7(1), -. doi: 10.22059/eoge.2023.364843.1141
MLA
Hosseiny, B. , and Amini, J. . "Bridge Vertical Deformation Monitoring Using GBSAR Repeat-Pass Observations", Earth Observation and Geomatics Engineering, 7, 1, 2023, -. doi: 10.22059/eoge.2023.364843.1141
HARVARD
Hosseiny, B., Amini, J. (2023). 'Bridge Vertical Deformation Monitoring Using GBSAR Repeat-Pass Observations', Earth Observation and Geomatics Engineering, 7(1), pp. -. doi: 10.22059/eoge.2023.364843.1141
CHICAGO
B. Hosseiny and J. Amini, "Bridge Vertical Deformation Monitoring Using GBSAR Repeat-Pass Observations," Earth Observation and Geomatics Engineering, 7 1 (2023): -, doi: 10.22059/eoge.2023.364843.1141
VANCOUVER
Hosseiny, B., Amini, J. Bridge Vertical Deformation Monitoring Using GBSAR Repeat-Pass Observations. Earth Observation and Geomatics Engineering, 2023; 7(1): -. doi: 10.22059/eoge.2023.364843.1141
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