18 October 2016 Structural health monitoring of engineered structures using a space-borne synthetic aperture radar multi-temporal approach: from cultural heritage sites to war zones
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Abstract
Structural health monitoring (SHM) of engineered structures consists of an automated or semi-automated survey system that seeks to assess the structural condition of an anthropogenic structure. The aim of an SHM system is to provide insights into possible induced damage or any inherent signals of deformation affecting the structure in terms of detection, localization, assessment, and prediction. During the last decade there has been a growing interest in using several remote sensing techniques, such as synthetic aperture radar (SAR), for SHM. Constellations of SAR satellites with short repeat time acquisitions permit detailed surveys temporal resolution and millimetric sensitivity to deformation that are at the scales relevant to monitoring large structures. The all-weather multi-temporal characteristics of SAR make its products suitable for SHM systems, especially in areas where in situ measurements are not feasible or not cost effective. To illustrate this capability, we present results from COSMO-SkyMed (CSK) and TerraSAR-X SAR observations applied to the remote sensing of engineered structures. We show how by using multiple-geometry SAR-based products which exploit both phase and amplitude of the SAR signal we can address the main objectives of an SHM system including detection and localization. We highlight that, when external data such as rain or temperature records are available or simple elastic models can be assumed, the SAR-based SHM capability can also provide an interpretation in terms of assessment and prediction. We highlight examples of the potential for such imaging capabilities to enable advances in SHM from space, focusing on dams and cultural heritage areas.
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Pietro Milillo, Pietro Milillo, Deodato Tapete, Deodato Tapete, Francesca Cigna, Francesca Cigna, Daniele Perissin, Daniele Perissin, Jacqueline Salzer, Jacqueline Salzer, Paul Lundgren, Paul Lundgren, Eric Fielding, Eric Fielding, Roland Burgmann, Roland Burgmann, Filippo Biondi, Filippo Biondi, Giovanni Milillo, Giovanni Milillo, Carmine Serio, Carmine Serio, } "Structural health monitoring of engineered structures using a space-borne synthetic aperture radar multi-temporal approach: from cultural heritage sites to war zones", Proc. SPIE 10003, SAR Image Analysis, Modeling, and Techniques XVI, 100030N (18 October 2016); doi: 10.1117/12.2241620; https://doi.org/10.1117/12.2241620
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