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Remote Sens. 2010, 2(1), 36-51; doi:10.3390/rs2010036

Application of Microwave Remote Sensing to Dynamic Testing of Stay-Cables

Politecnico di Milano, Department of Structural Engineering, Piazza Leonardo da Vinci, 32 – 20133 Milan, Italy
Received: 20 October 2009 / Revised: 14 December 2009 / Accepted: 23 December 2009 / Published: 28 December 2009
(This article belongs to the Special Issue Microwave Remote Sensing)
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Abstract

Recent advances in radar techniques and systems have favoured the development of microwave interferometers, suitable for the non-contact vibration monitoring of large structures. The paper addresses the application of microwave remote sensing to the measurement of the vibration response in the stay-cables of cable-stayed bridges. The reliability and accuracy of the proposed technique were investigated by comparing the natural frequencies (and the cable tensions predicted from natural frequencies) identified from radar data and the corresponding quantities obtained using more conventional techniques. The investigation, carried out on the cables of two different cable-stayed bridges, clearly highlights: (a) the accuracy of the results provided by the microwave remote sensing; (b) the simplicity of use of the radar technique (especially when compared with conventional approaches) and its effectiveness to simultaneously measuring the dynamic response of all the stay-cables of an array.
Keywords: dynamic testing; interferometry; radar; remote sensing; stay-cable dynamic testing; interferometry; radar; remote sensing; stay-cable
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Gentile, C. Application of Microwave Remote Sensing to Dynamic Testing of Stay-Cables. Remote Sens. 2010, 2, 36-51.

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