Title :
Diffraction tomography method development in wide frequency range
Author :
Vertiy, A. ; Gavrilov, S. ; Voynovskiy, I. ; Aksoy, Selim ; Salman, A.O.
Author_Institution :
TUBITAK-MRC, Turkish-Ukrainian Joint Res. Lab., Turkey
Abstract :
The described systems combine the possibilities of tomograph operating “on passage” as well as tomograph operating in a regime of subsurface measurements. It is shown that if the incident wave is arranged at the Brewster angle, the surface reflection is decreased and imaging by microwave tomography method or the stepped frequency radar method of buried weakly scattered objects like mines etc. is better than at the non-Brewster angle. A new reduction method of the surface contribution in an image of subsurface objects is offered and considered. The essence of the method consists in using leaky waves of a transmission line of electromagnetic energy, when the line is located close to a surface, for illumination of subsurface objects. The suggested version of tomography is orientated towards applications in industry, medicine, detection and identification of abandoned objects and other fields
Keywords :
buried object detection; dielectric bodies; electromagnetic wave diffraction; electromagnetic wave reflection; image reconstruction; microwave imaging; radar detection; radar imaging; tomography; Brewster angle; buried weakly scattered objects; dielectric bodies; diffraction tomography; electromagnetic energy; incident wave; industry; leaky waves; medicine; microwave imaging; microwave tomography method; mines; nonBrewster angle; object detection; object identification; stepped frequency radar method; subsurface measurements; subsurface objects; surface reflection; transmission line; wide frequency range; Diffraction; Electromagnetic scattering; Frequency; Microwave imaging; Microwave theory and techniques; Radar imaging; Radar scattering; Reflection; Surface waves; Tomography;
Conference_Titel :
Mathematical Methods in Electromagnetic Theory, 2000. MMET 2000. International Conference on
Conference_Location :
Kharkov
Print_ISBN :
0-7803-6347-7
DOI :
10.1109/MMET.2000.888509