Microwave tomography of radiopaque objects: Fid-Bau Portal

Microwave tomography of radiopaque objects

Yakubov, V.P. / Shipilov, S.E. / Sukhanov, D.Y.

Methods for restoring the images of objects that are transparent and opaque to radio waves are considered. The methods are based on the tomographic approach, which uses the synthesis of the aperture and the focusing of the received radiation. The validity of the methods is confirmed by the results of numerical modeling and the processing of experimental data. We performed an experiment on the detection of a metal object in a building foam concrete wall. The photograph of the experimental apparatus and the shape of the tested object are shown in Fig. 4. A plane step-shaped metal object was placed between two foam concrete blocks 10 cm in thickness. Scanning was performed over an 84 × 86 cm surface area. The foam concrete blocks and the object were placed at a distance of 80 cm. The resulting restored tomograms of these radiopaque and radiotransparent objects are shown. The objects are clearly distinguished with the use of 200 ps pulses. Hence, the use of UBB radiation allows us to efficiently perform the spatiotemporal localization of the interaction of radiation with a substance and, on this basis, to solve the problem of radio-wave tomography for both semitransparent and opaque objects. The field of the practical application of nonstationary fields is continuously widening at the present time.