A numerical evaluation of an optimal setup for a microwave axial tomograph aimed at the inspection of wood

Abstract

This paper presents the results of model based numerical simulations (Ansoft HFSScopy) used to analyze the scattering of the electromagnetic field on sample objects, in order to determine an optimal setup for a new microwave tomograph aimed at the inspection of wood trunks. Such a tomograph is targeted to obtain images of the cross section of dielectric cylinders. In particular, it was used to inspect wood slabs and trunks in order to search for defects and voids. For best results of the inversion (tomographic image reconstruction) algorithms, it is important that the measured data (samples of the scattered electric field) are collected under an optimal setup configuration of the sample, the illuminating and the pick-up antennas.