Regional Estimation of the Geometric and Dielectric Properties of Inhomogeneous Objects using Near-field Reflection Data
Date
2013-04-30
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Abstract
An inversion strategy is presented that integrates a radar-based method with microwave tomography (MWT). The inversion technique is carried out in two steps. First, a reconstruction model indicating the locations and spatial features of regions of interest is constructed efficiently and quickly using ultrawideband (UWB) reflection data. The object-specific reconstruction model is incorporated into the second step of the procedure which estimates the mean dielectric properties over each region using MWT methods. Segmenting the internal structure of the object into regions provides prior information about an object's internal geometry and significantly simplifies the parameter space structure so that the inverse scattering problem solved with MWT is not as ill-posed as those typically encountered. The aim is to provide information about the basic structure of an object, including the geometric and mean dielectric properties of regions predominantly composed of a given material, rather than to reconstruct a detailed image.
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Engineering--Electronics and Electrical
Citation
Kurrant, D. (2013). Regional Estimation of the Geometric and Dielectric Properties of Inhomogeneous Objects using Near-field Reflection Data (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27575