研究目的
Exploring the potentialities of synthetic aperture radar (SAR) for railway bridge monitoring, focusing on a case study regarding a bridge near Triflisco, Italy.
研究成果
The study highlights the importance of detailed knowledge of the bridge structure and its surroundings for understanding PS phenomenology. PS DInSAR shows potential for railway bridge monitoring, but its effectiveness depends on the ability to accurately associate PSs with physical structures and interpret their behavior.
研究不足
The PS technique's sensitivity limits the detection of displacements below a certain threshold. The association of PSs to specific physical objects in the scene is not always straightforward.
1：Experimental Design and Method Selection:
The study utilizes SAR images for PS DInSAR analysis to monitor bridge deformations. A FEM model of the bridge is developed for comparison with SAR observations.
2：Sample Selection and Data Sources:
Twenty-six Cosmo-SkyMed stripmap SAR images acquired over the bridge area from 2011-
3：List of Experimental Equipment and Materials:
20 Cosmo-SkyMed SAR images, FEM model developed using LUSAS software.
4：Experimental Procedures and Operational Workflow:
PS DInSAR analysis on SAR images, development and analysis of FEM model with thermal loads, comparison of FEM and PS-based displacements.
5：Data Analysis Methods:
Comparison of PS-based displacements with FEM-derived displacements, analysis of PS spatial distribution and behavior.
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