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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - High-Speed Railway Bridge Vibration Measurement and Analysis Based on Radar Interferometry
摘要： A newly designed radar based on interferometry is proposed and well designed in the paper. The designed radar can detect the vibration of the railway bridge with a super-resolution and a high precision, which also has remote sensing ability. The general bridge monitoring methods are expensive and time-consuming since it is difficult to install sensors that should be directly contact with the bridge, such as accelerometer and dynamometer. Based on the designed radar, experiments are constructed on a Beijing-Tianjin Inter-City high-speed railway bridge to prove that the radar interferometry can be used to preciously and accurately monitor the railway bridge’s vibration.
关键词： Vibration,Railway bridge,Interferometry
更新于2025-09-23 15:21:21
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia, Spain (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Railway Bridge Monitoring with Sar: A Case Study
摘要： Spaceborne sensors allow large areas of the Earth to be monitored with small revisit times; conversely, use of in situ techniques frequently limits spatial and/or temporal coverage of critical infrastructure observations. In this paper, some of the potentialities of synthetic aperture radar (SAR) for railway bridge monitoring are explored. The study is focused on a case study regarding a bridge near Triflisco, a small city in Campania, Italy. Twenty-six Cosmo-SkyMed stripmap SAR images were acquired over the area, allowing for a permanent-scatterer (PS) analysis of the bridge structure. Thanks to the availability of a detailed ground truth, the physical nature of the bridge PSs, their spatial distribution, and their time behavior are investigated. In particular, the PS behavior is compared to deformation results obtained using thermal loads in a finite-element model of the bridge.
关键词： permanent scatterers,Synthetic aperture radar,F.E.M.,railway bridge
更新于2025-09-10 09:29:36