15 October 1999 Experimental investigation of buried objects by microwave tomography method
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Abstract
In this paper the results of experimental investigation of buried objects are given. To find images of the objects the microwave multi-frequency diffraction tomography method was used. For image reconstruction of the objects we used a plane wave spectrum of diffracted field. A vectorial network analyzer measured real and imaginary parts of the diffracted field by its sin/cos converter. The wave incident near to the normal of the surface was used in our measurements at frequency range of 2.5 - 4.5 GHz. The experimental set-up allows to obtain the diffracted field data at 512 frequency points. It contains a mechanical scanner system that can move as well linearly as in 2-D space. In the inverse problem a complex function of space coordinates representing the normalized polarization currents was reconstructed. A module of the complex function is the image of the object under investigation. The reconstruction algorithm is based on Fourier inverse formulas. The images of dielectric and metallic objects of different shape and configuration were reconstructed. The results of investigation may be used for civil or medical science application.
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Alexey A. Vertiy, Sergiy P. Gavrilov, Banu Tansel, Igor Voynovskyy, "Experimental investigation of buried objects by microwave tomography method", Proc. SPIE 3752, Subsurface Sensors and Applications, (15 October 1999); doi: 10.1117/12.365699; https://doi.org/10.1117/12.365699
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