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Combined InSAR and Terrestrial Structural Monitoring of Bridges

Accepted version
Peer-reviewed

Type

Article

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Authors

Abstract

This paper examines advances in InSAR satellite measurement technologies to understand their relevance, utilisation and limitations for bridge monitoring. Waterloo Bridge is presented as a case study to explore how InSAR data sets can be combined with traditional measurement techniques including sensors installed on the bridge and automated total stations. A novel approach to InSAR bridge monitoring was adopted by the installation of physical reflectors at key points of structural interest on the bridge, in order to supplement the bridge’s own reflection characteristics and ensure that the InSAR measurements could be directly compared and combined with insitu measurements. The interpretation and integration of InSAR data sets with civil infrastructure data is more than a trivial task, and a discussion of uncertainty of measurement data is presented. Finally, a strategy for combining and interpreting varied data from multiple sources to provide useful insights into each of these methods is presented, outlining the practical applications of this data analysis to support wider monitoring strategies.

Description

Keywords

Bridges, Monitoring, Inspection, Satellites, Synthetic aperture radar, Rivers, Spaceborne radar, Bridge, corner reflectors, interferometric synthetic aperture radar (InSAR), structural health monitoring (SHM), TerraSAR-X

Journal Title

IEEE Transactions on Geoscience and Remote Sensing

Conference Name

Journal ISSN

0196-2892
1558-0644

Volume Title

58

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Rights

All rights reserved
Sponsorship
National Physical Laboratory (NPL) (unknown)
EPSRC (1636878)
EPSRC (1636878)
Author funding under EPSRC (UK) Award 1636878, co-author funding under Research Council of Norway (RCN Grant no. 237906).