Satellite sensing technology to monitor bridges and other civil infrastructures

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Conference5th International Conference on Structural Health Monitoring of Intelligent and other Civil Infrastructure (SHMII-5): 11 December 2011, Cancun, Mexico
Pages19; # of pages: 9
AbstractThe widespread deterioration of urban bridges has highlighted the importance of developing effective bridge monitoring strategies to identify structural problems before they become critical to public safety. The capability of Canada?s RADARSAT-2 advanced synthetic aperture radar satellite is being investigated for use in an approach to help prioritize in-situ monitoring and maintenance of critical bridges. Radar Interferometry is an advanced processing technique applied to radar images of the earth?s surface that can detect very small ground movements. With this technique, it is possible to detect changes in the elevation of civil infrastructures (e.g. bridges and roads) in the millimetre range, and therefore identify excessive displacements requiring more detailed ground investigation. A major advantage of this technology is that a single radar image, which can be obtained in darkness and through clouds, can cover a major urban centre. Preliminary results from an application of this technology to the transportation infrastructure in the Vancouver metropolitan area are presented.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number54507
NPARC number20374436
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Record identifier368bf6b7-2364-42c1-a75f-c772312f13c5
Record created2012-07-23
Record modified2016-05-09
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