This study reviews research developments in non-destructive assessment of linear transport infrastructures. The main focus will be on the integration between satellite remote sensing and ground-based techniques. Specifically, the potential of using interferometric synthetic aperture radar (InSAR) and high-frequency ground penetrating radar (GPR) techniques as self-standing and integrated survey methodologies will be discussed. To this effect, an overview on data fusion techniques will be given. The last section of the paper reports recent results achieved by using both GPR systems and the permanent scatterers InSAR technique on a real-life railway.

中文翻译：

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InSAR 和 GPR 数据融合的交通基础设施监测

本研究回顾了线性交通基础设施无损评估的研究进展。主要重点将放在卫星遥感和地面技术之间的整合上。具体而言，将讨论使用干涉合成孔径雷达 (InSAR) 和高频探地雷达 (GPR) 技术作为独立和综合测量方法的潜力。为此，将概述数据融合技术。论文的最后一部分报告了在现实铁路上使用 GPR 系统和永久散射体 InSAR 技术取得的最新成果。