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Advancing Ground-Based Radar Processing for Bridge Infrastructure Monitoring

Michel, Chris; Keller, Sina

Abstract (englisch):
In this study, we further develop the processing of ground-based interferometric radar measurements for the application of bridge monitoring. Applying ground-based radar in such complex setups or long measurement durations requires advanced processing steps to receive accurate measurements. These steps involve removing external influences from the measurement and evaluating the measurement uncertainty during processing. External influences include disturbances caused by objects moving through the signal, static clutter from additional scatterers, and changes in atmospheric properties. After removing these influences, the line-of-sight displacement vectors, measured by multiple ground-based radars, are decomposed into three-dimensional displacement components. The advanced processing steps are applied exemplarily on measurements with two sensors at a prestressed concrete bridge near Coburg (Germany). The external influences are successfully removed, and two components of the three-dimensional displacement vector are determined. A measurement uncertainty of less than 0.1mm is achieved for the discussed application.

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Originalveröffentlichung
DOI: 10.3390/s21062172
Zugehörige Institution(en) am KIT Institut für Photogrammetrie und Fernerkundung (IPF)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1424-8220
KITopen-ID: 1000130819
Erschienen in Sensors
Verlag MDPI
Band 21
Heft 6
Seiten 2172
Vorab online veröffentlicht am 20.03.2021
Schlagwörter ground-based interferometric radar; remote measurement; structural health monitoring (SHM); three-dimensional displacement; multiple radar sensors
Nachgewiesen in Scopus
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