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Sensor Technologies for Civil Infrastructures, Volume 1 by Hoon Sohn, Jerome P. Lynch, Ming L. Wang

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8

Radar technology: radio frequency, interferometric, millimeter wave and terahertz sensors for assessing and monitoring civil infrastructures

D. Huston,    University of Vermont, USA

D. Busuioc,    DB Consulting, USA

Abstract:

Radar and millimeter wave methods provide a means of remote and noncontacting examination of structures through controlled electromagnetic (EM) interactions. Metallic and nonmetallic structures reflect and scatter EM waves impinging at the outer surfaces. Nonmetallic, i.e., dielectric, materials allow for EM waves to penetrate the surface, and scatter or reflect off of subsurface objects and features. Actively measuring surface and subsurface reflectivity and scattering by the controlled launching and receiving of EM waves ...

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