Title :
A two-step inverse scattering procedure for the qualitative imaging of homogeneous cracks in known host media - preliminary results
Author :
Benedetti, Manuel ; Donelli, Massimo ; Lesselier, Dominique ; Massa, Andrea
fDate :
6/29/1905 12:00:00 AM
Abstract :
In the framework of nondestructive evaluation and testing, microwave inverse scattering approaches demonstrated their effectiveness and the feasibility of detecting unknown anomalies in dielectric materials. In this letter, an innovative technique is proposed in order to enhance their reconstruction accuracy. The approach is aimed at first estimating the region-of-interest (RoI) where the defect is supposed to be located and then at improving the qualitative imaging of the crack through a level-set-based shaping procedure. In order to assess the effectiveness of the proposed approach, representative numerical results concerned with different scenarios and blurred data are presented and discussed.
Keywords :
crack detection; dielectric materials; genetic algorithms; microwave imaging; nondestructive testing; dielectric materials; genetic algorithm; homogeneous cracks; level-set-based shaping procedure; microwave imaging; microwave inverse scattering; nondestructive evaluation; nondestructive testing; qualitative imaging; region-of-interest estimation; unknown anomalies detection; Dielectric materials; Electromagnetic fields; Electromagnetic scattering; Image reconstruction; Inverse problems; Level set; Materials testing; Microwave imaging; Nondestructive testing; Shape; Genetic Algorithms; Genetic algorithms; Level-Set; Microwave Imaging; NDE/NDT; level set; microwave imaging; nondestructive testing and nondestructive evaluation (NDT/NDE);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2007.910954
